Results for 'cosmology modelling'

953 found
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  1.  61
    RL+ Cosmological Model.Paul Studtmann - manuscript
    We present a cosmological model (RL+) that offers exact predictions for the Hubble constant, the cosmological constant, the total energy density of the universe, and a curvature that matches current observational constraints. The model predicts a cosmological constant energy density that constitutes approximately 64% of the total energy budget, in agreement with current estimates from the standard LCDM model. Furthermore, the model addresses several longstanding cosmological problems—namely, the problem of infinite initial density, the coincidence problem, and the flatness problem—all with (...)
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  2. Comparing Cosmological Models.Andrew Holster - manuscript
    The standard model of cosmology is acclaimed in physics as accurate, robust, well-tested, our best scientific theory of the cosmos, but it has had serious anomalies for a while, including the Hubble tension, anomalous galaxies, and the completely unexplained nature of dark energy and dark matter. And lurking behind it all is the lack of a unified theory: General Relativity (GR) and quantum mechanics (QM) are inconsistent. Now startling new observations by the James Webb Space Telescope (JWST) in 2022 (...)
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  3. Solving Numerically Ermakov-type Equation for Newtonian Cosmology Model with Vortex.Victor Christianto, Florentin Smarandache & Yunita Umniyati - manuscript
    It has been known for long time that most of the existing cosmology models have singularity problem. Cosmological singularity has been a consequence of excessive symmetry of flow, such as “Hubble’s law”. More realistic one is suggested, based on Newtonian cosmology model but here we include the vertical-rotational effect of the whole Universe. We review a Riccati-type equation obtained by Nurgaliev, and solve the equation numerically with Mathematica. It is our hope that the new proposed method can be (...)
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  4. A Derivation of Fluidic Maxwell-Proca Equations for Electrodynamics of Superconductors and Implication to Chiral Cosmology model.Victor Christianto, Florentin Smarandache & Yunita Umniyati - manuscript
    In a rather old paper, Mario Liu described a hydrodynamic Maxwell equations. While he also discussed potential implications of these new approaches to superconductors, such a discussion of electrodynamics of superconductors is made only after Tajmar’s paper. Therefore, in this paper we present for the first time a derivation of fluidic Maxwell-Proca equations. The name of fluidic Maxwell-Proca is proposed because the equations were based on modifying Maxwell-Proca and Hirsch’s theory of electrodynamics of superconductor. It is hoped that this paper (...)
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  5. The Aquinas's criticism of the cosmological models of the 13th century : a step in the developement of scientific skepticism - Revista Española de Filosofía Medieval.Ana Maria C. Minecan - 2016 - Revista Española de Filosofía Medieval 23:217-228.
    This article analyzes the treatment of natural philosophy in the work of Thomas Aquinas from the point of view of assimilation of the Aristotelian physical corpus. It focuses primarily on the Aquinas’s defense of the conception of the fallibility of the natural reason, the provisional and revisable character of all physical theories, the necessity of intercultural dialogue to discover the truths about nature, and Aquinas’s role in the development of the skeptical attitude in scientific research of the mobile’s world.
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  6. Cosmology and convention.David Merritt - 2017 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 57:41-52.
    I argue that some important elements of the current cosmological model are 'conventionalist’ in the sense defined by Karl Popper. These elements include dark matter and dark energy; both are auxiliary hypotheses that were invoked in response to observations that falsified the standard model as it existed at the time.
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  7. T I M E in the Light of a New Cosmological Conception.Oleg Bazaluk - 2003 - Porogi.
    This small book continues the theoretical study on the structure of the universe. It examines the category of “time” in the light of a new cosmological model proposed by the author in his book “The Origin of Mankind”. It is generally accepted that after researches of A. Einstein, А. Minkovsky and others space and time are considered in their interrelation, as the continuum. Nevertheless, the category of “time” is still a bone of contention and a cause of a great deal (...)
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  8. Cosmological Tests of Gravity.Nicolae Sfetcu - manuscript
    The current cosmological models are built based on general relativity. The solutions of the specific equations, Friedmann-Lemaître-Robertson-Walker, allow to model the evolution of the universe starting from the Big Bang. Some of the parameters of the universe have been established by observations. Based on these, and other observational data, the models can be tested. Predictions include the initial abundance of chemical elements formed in a period of nucleosynthesis during the Big Bang period, the subsequent structure of the universe, cosmic background (...)
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  9. (1 other version)Time in Cosmology.Chris Smeenk - 2013 - In Adrian Bardon & Heather Dyke (eds.), The Blackwell Companion to the Philosophy of Time. Wiley-Blackwell. pp. 201-219.
    This essay aims to provide a self-contained introduction to time in relativistic cosmology that clarifies both how questions about the nature of time should be posed in this setting and the extent to which they have been or can be answered empirically. The first section below recounts the loss of Newtonian absolute time with the advent of special and general relativity, and the partial recovery of absolute time in the form of cosmic time in some cosmological models. Section II (...)
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  10. Philosophy of Cosmology.Chris Smeenk - 2013 - In Robert W. Batterman (ed.), The Oxford Handbook of Philosophy of Physics. Oxford University Press USA. pp. 607-652.
    This chapter addresses philosophical questions raised in contemporary work on cosmology. It provides an overview of the Standard Model for cosmology and argues that its deficiency in addressing theories regarding the very early universe can be resolved by introducing a dynamical phase of evolution that eliminates the need for a special initial state. The chapter also discusses recent hypotheses about dark matter and energy, issues that it relates to philosophical debates about underdetermination.
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  11. Stability in Cosmology, from Einstein to Inflation.C. D. McCoy - 2020 - In Claus Beisbart, Tilman Sauer & Christian Wüthrich (eds.), Thinking About Space and Time: 100 Years of Applying and Interpreting General Relativity. Cham: Birkhäuser. pp. 71-89.
    I investigate the role of stability in cosmology through two episodes from the recent history of cosmology: Einstein’s static universe and Eddington’s demonstration of its instability, and the flatness problem of the hot big bang model and its claimed solution by inflationary theory. These episodes illustrate differing reactions to instability in cosmological models, both positive ones and negative ones. To provide some context to these reactions, I also situate them in relation to perspectives on stability from dynamical systems (...)
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  12. Time in Cosmology.C. D. McCoy & Craig Callender - 2022 - In Eleanor Knox & Alastair Wilson (eds.), The Routledge Companion to Philosophy of Physics. London, UK: Routledge. pp. 707–718.
    Readers familiar with the workhorse of cosmology, the hot big bang model, may think that cosmology raises little of interest about time. As cosmological models are just relativistic spacetimes, time is understood just as it is in relativity theory, and all cosmology adds is a few bells and whistles such as inflation and the big bang and no more. The aim of this chapter is to show that this opinion is not completely right...and may well be dead (...)
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  13. Tests and Problems of the Standard Model in Cosmology.Martín López-Corredoira - 2017 - Foundations of Physics 47 (6):711-768.
    The main foundations of the standard \CDM model of cosmology are that: the redshifts of the galaxies are due to the expansion of the Universe plus peculiar motions; the cosmic microwave background radiation and its anisotropies derive from the high energy primordial Universe when matter and radiation became decoupled; the abundance pattern of the light elements is explained in terms of primordial nucleosynthesis; and the formation and evolution of galaxies can be explained only in terms of gravitation within a (...)
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  14. On Probability and Cosmology: Inference Beyond Data?Martin Sahlen - 2017 - In Khalil Chamcham, John Barrow, Simon Saunders & Joe Silk (eds.), The Philosophy of Cosmology. Cambridge, United Kingdom: Cambridge University Press.
    Modern scientific cosmology pushes the boundaries of knowledge and the knowable. This is prompting questions on the nature of scientific knowledge. A central issue is what defines a 'good' model. When addressing global properties of the Universe or its initial state this becomes a particularly pressing issue. How to assess the probability of the Universe as a whole is empirically ambiguous, since we can examine only part of a single realisation of the system under investigation: at some point, data (...)
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  15. (1 other version)Explanatory Depth in Primordial Cosmology: A Comparative Study of Inflationary and Bouncing Paradigms.William J. Wolf & Karim P. Y. Thebault - forthcoming - British Journal for the Philosophy of Science.
    We develop and apply a multi-dimensional conception of explanatory depth towards a comparative analysis of inflationary and bouncing paradigms in primordial cosmology. Our analysis builds on earlier work due to Azhar and Loeb (2021) that establishes initial condition fine-tuning as a dimension of explanatory depth relevant to debates in contemporary cosmology. We propose dynamical fine-tuning and autonomy as two further dimensions of depth in the context of problems with instability and trans-Planckian modes that afflict bouncing and inflationary approaches (...)
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  16. Reinterpreting Relativity: Using the Equivalence Principle to Explain Away Cosmological Anomalies.Marcus Arvan - manuscript
    According to the standard interpretation of Einstein’s field equations, gravity consists of mass-energy curving spacetime, and an additional physical force or entity—denoted by Λ (the ‘cosmological constant’)—is responsible for the Universe’s metric-expansion. Although General Relativity’s direct predictions have been systematically confirmed, the dominant cosmological model thought to follow from it—the ΛCDM (Lambda cold dark matter) model of the Universe’s history and composition—faces considerable challenges, including various observational anomalies and experimental failures to detect dark matter, dark energy, or inflation-field candidates. This (...)
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  17. Thinking Out Loud on Early Creation through the Lens of Hermeneutics of Sherlock Holmes (Towards a Model of Universe based on Turbulence-Generated Sound Theory).Victor Christianto & Florentin Smarandache - manuscript
    In recent years, apparently the Big Bang as described by the Lambda CDM-Standard Model Cosmology has become widely accepted by majority of physics and cosmology communities. Even some people have concluded that it has no serious alternative in horizon. Is that true? First, as we argued elsewhere, Big Bang story relies on singularity. In other words, when we are able to describe the observed data without invoking singularity, then Big Bang model is no longer required. Therefore, here we (...)
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  18. Balloons on a String: A Critique of Multiverse Cosmology.Bruce Gordon - 2011 - In Bruce Gordon & William A. Dembski (eds.), The nature of nature: examining the role of naturalism in science. Wilmington, DE: ISI Books. pp. 558-601.
    Our examination of universal origins and fine-tuning will begin with a discussion of infl ationary scenarios grafted onto Big Bang cosmology and the proof that all infl ationary spacetimes are past-incomplete. After diverting into a lengthy critical examination of the “different physics” offered by quantum cosmologists at the past-boundary of the universe, we will proceed to dissect the inadequacies of infl ationary explanations and string-theoretic constructs in the context of three cosmological models that have received much attention: the Steinhardt-Turok (...)
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  19. The Kalam cosmological argument: Critiquing a recent defence.Phillip Halper - 2021 - Think 20 (57):153-165.
    ABSTRACTIn the late 1970s the big bang model of cosmology was widely accepted and interpreted as implying the universe had a beginning. At the end of that decade William Lane Craig revived an argument for God known as the Kalam Cosmological Argument based on this scientific consensus. Furthermore, he linked the big bang to the supposed biblical concept of creation ex nihilo found in Genesis. I shall critique Craig's position as expressed in a more recent update and argue that (...)
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  20. False Vacuum: Early Universe Cosmology and the Development of Inflation.Chris Smeenk - 2005 - In Eisenstaedt Jean & Knox A. J. (eds.), The Universe of General Relativity. Birkhauser. pp. 223-257.
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  21. Finding Time for Wheeler-DeWitt Cosmology.Nick Huggett & Karim Thebault - manuscript
    We conduct a case study analysis of a proposal for the emergence of time based upon the approximate derivation of three grades of temporal structure within an explicit quantum cosmological model which obeys a Wheeler-DeWitt type equation without an extrinsic time parameter. Our main focus will be issues regarding the consistency of the approximations and derivations in question. Our conclusion is that the model provides a self-consistent account of the emergence of chronordinal, chronometric and chronodirected structure. Residual concerns relate to (...)
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  22. On conceptual problems in cosmology.Sydney Ernest Grimm - manuscript
    Phenomenological reality is created by the underlying structure of the basis quantum fields and not the opposite. In cosmology this isn’t the leading concept. Cosmologists share a different concept, the Standard cosmological model. Unfortunately, the general concept of quantum field theory doesn’t predict the expansion of space and the concentration of all the energy of the universe in one little spot. The paper describes the consequences.
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  23. Four Possible Ways to Model Rotating Universe.Victor Christianto & Florentin Smarandache - manuscript
    It is known that most existing cosmology models do not include rotation, with few exceptions such as rotating Bianchi and rotating Godel metrics. Therefore in this paper we aim to discuss four possible ways to model rotating universe, including Nurgaliev’s Ermakov-type equation. It is our hope that the new proposed method can be verified with observations, in order to open new possibilities of more realistic nonlinear cosmology models.
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  24. Extensions of quantum gravity theories - Final theory and cosmology.Nicolae Sfetcu - manuscript
    The fields of application of general relativity (GR) and quantum field theory (QFT) are different, so most situations require the use of only one of the two theories. The overlaps occur in regions of extremely small size and high mass, such as the black hole or the early universe (immediately after the Big Bang). This conflict is supposed to be solved only by unifying gravity with the other three interactions, to integrate GR and QFT into one theory. At the cosmological (...)
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  25. The Origin of Mankind A New Cosmological Conception.Oleg Bazaluk - 2003 - Porogi.
    I present my own vision of the material world's formation. I think this new cosmological model deepens and extends the modern points of view on the universe. It allows to follow the evolution of matter up to forming of human society. I had to rethink a lot and even to change and to surrender in some degree my points of view stated in my previous publications. But these changes had a partial character and naturally resulted from the evolution of my (...)
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  26. (4 other versions)Philosophy and Cosmology 2008 (The Journal of International Society of Philosophy and Cosmology (ISPC) ).Oleg Bazaluk (ed.) - 2008 - ISPC.
    Philosophy and Cosmology is an open access, peer-reviewed and refereed journal that focuses on theoretical and conceptual problems and issues in philosophical and cosmological research. Philosophy and Cosmology is published by International Society of Philosophy and Cosmology. The objective of Philosophy and Cosmology is to promote exchange and collaboration among philosophers, social, technical and natural science researchers throughout the world. In pursuit of this objective the journal not only publishes high quality research papers but also ensures (...)
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  27. A Geometric Model of the Universe with Time Flow.Andrew Holster - manuscript
    This study presents a new type of foundational model unifying quantum theory, relativity theory and gravitational physics, with a novel cosmology. It proposes a six-dimensional geometric manifold as the foundational ontology for our universe. The theoretical unification is simple and powerful, and there are a number of novel empirical predictions and theoretical reductions that are strikingly accurate. It subsequently addresses a variety of current anomalies in physics. It shows how incomplete modern physics is by giving an example of a (...)
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  28. (1 other version)A Model for Creation: Part I.Paul Bernard White - manuscript
    Four initial postulates are presented (with two more added later), which state that construction of the physical universe proceeds from a sequence of discrete steps or "projections" --- a process that yields a sequence of discrete levels (labeled 0, 1, 2, 3, 4). At or above level 2 the model yields a (3+1)-dimensional structure, which is interpreted as ordinary space and time. As a result, time does not exist below level 2 of the system, and thus the quantum of action, (...)
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  29. Some reflections on the structure of cosmological knowledge.Chris Smeenk - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 71:220-231.
    Stein has characterized one of the central problems in accounting for our knowledge in physics as that of getting the laboratory, or observatory, inside the theory -- that is, of understanding how the mathematical structures of fundamental physical theories have empirical content. He has argued that physicists respond to this problem by giving schematic representations of observers and experiments. In addition, Stein emphasizes the importance of regarding knowledge as an enterprise, with current theories providing guidance for future inquiry. I will (...)
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  30. Space-Time Dimension Problem as a Stumbling Block of Inflationary Cosmology.Rinat M. Nugayev - 2013 - In Vadim V. Kazutinsky, Elena A. Mamchur, Alexandre D. Panov & V. D. Erekaev (eds.), Metauniverse,Space,Time. Institute of Philosophy of RAS. pp. 52-73.
    It is taken for granted that the explanation of the Universe’s space-time dimension belongs to the host of the arguments that exhibit the superiority of modern (inflationary) cosmology over the standard model. In the present paper some doubts are expressed . They are based upon the fact superstring theory is too formal to represent genuine unification of general relativity and quantum field theory. Neveretheless, the fact cannot exclude the opportunity that in future the superstring theory can become more physical. (...)
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  31. Does inflation solve the hot big bang model׳s fine-tuning problems?C. D. McCoy - 2015 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 51 (C):23-36.
    Cosmological inflation is widely considered an integral and empirically successful component of contemporary cosmology. It was originally motivated by its solution of certain so-called fine-tuning problems of the hot big bang model, particularly what are known as the horizon problem and the flatness problem. Although the physics behind these problems is clear enough, the nature of the problems depends on the sense in which the hot big bang model is fine-tuned and how the alleged fine-tuning is problematic. Without clear (...)
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  32. The Application of Popperian Methodology to Contemporary Cosmology.Anastasiia Lazutkina - 2021 - In Parusniková Zuzana & Merritt David (eds.), Karl Popper's Science and Philosophy. Cham, Switzerland: Springer. pp. 97-117.
    In this chapter I will discuss Karl Popper’s notion of metaphysical research programmes (MRPs) and apply it to contemporary cosmology. While Popper was extremely critical of Big Bang cosmology, his work on MRPs provides a potentially fruitful way of understanding the discipline in a different light. I will suggest that while cosmology does fail to meet the criteria Popper sets for a mature science, the standard model of cosmology (also known as ΛCDM) could be seen as (...)
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  33. An Outline of Cellular Automaton Universe via Cosmological KdV equation.Victor Christianto, Florentin Smarandache & Yunita Umniyati - manuscript
    It has been known for long time that the cosmic sound wave was there since the early epoch of the Universe. Signatures of its existence are abound. However, such a sound wave model of cosmology is rarely developed fully into a complete framework. This paper can be considered as our second attempt towards such a complete description of the Universe based on soliton wave solution of cosmological KdV equation. Then we advance further this KdV equation by virtue of Cellular (...)
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  34. A Model for Constructing the Physical Universe.White Paul - manuscript
    In the introduction I argue that the basic element (or primitive) for constructing the physical universe is "displacement from a prior level", and the basic structure is "a sequence of such displacements" (summarized as postulates 1 and 2). The displacements are then defined as one-dimensional objects with a direction (postulate 3). The relations between these displacements are stated in postulate 4. In section 2 we discuss basic consequences of the postulates, and in section 3 we use the postulates to derive (...)
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  35. Thoughts on Artificial Intelligence and the Origin of Life Resulting from General Relativity, with Neo-Darwinist Reference to Human Evolution and Mathematical Reference to Cosmology.Rodney Bartlett - manuscript
    When this article was first planned, writing was going to be exclusively about two things - the origin of life and human evolution. But it turned out to be out of the question for the author to restrict himself to these biological and anthropological topics. A proper understanding of them required answering questions like “What is the nature of the universe – the home of life – and how did it originate?”, “How can time travel be removed from fantasy and (...)
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  36. From Acoustic Analog of Space, Cancer Therapy, to Acoustic Sachs-Wolfe Theorem: A Model of the Universe as a Guitar.Victor Christianto, Florentin Smarandache & Yunita Umniyati - manuscript
    It has been known for long time that the cosmic sound wave was there since the early epoch of the Universe. Signatures of its existence are abound. However, such an acoustic model of cosmology is rarely developed fully into a complete framework from the notion of space, cancer therapy up to the sky. This paper may be the first attempt towards such a complete description of the Universe based on classical wave equation of sound. It is argued that one (...)
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  37. How Many Points are there in a Line Segment? – A new answer from Discrete-Cellular Space viewpoint.Victor Christianto & Florentin Smarandache - manuscript
    While it is known that Euclid’s five axioms include a proposition that a line consists at least of two points, modern geometry avoid consistently any discussion on the precise definition of point, line, etc. It is our aim to clarify one of notorious question in Euclidean geometry: how many points are there in a line segment? – from discrete-cellular space (DCS) viewpoint. In retrospect, it may offer an alternative of quantum gravity, i.e. by exploring discrete gravitational theories. To elucidate our (...)
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  38. Beyond Falsifiability: Normal Science in a Multiverse.Sean M. Carroll - 2019 - In Dawid Richard, Dardashti Radin & Thebault Karim (eds.), Epistemology of Fundamental Physics: Why Trust a Theory? Cambridge University Press.
    Cosmological models that invoke a multiverse - a collection of unobservable regions of space where conditions are very different from the region around us - are controversial, on the grounds that unobservable phenomena shouldn't play a crucial role in legitimate scientific theories. I argue that the way we evaluate multiverse models is precisely the same as the way we evaluate any other models, on the basis of abduction, Bayesian inference, and empirical success. There is no scientifically respectable way to do (...)
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  39. Chinese Dialectical Thinking—the Yin Yang Model.Xinyan Jiang - 2013 - Philosophy Compass 8 (5):438-446.
    The yin yang model of thinking is most essential to the Chinese cosmology, ontology and outlook on life. This paper is a systematic discussion of such a dialectical way of thinking and its significance. It starts with investigating the origin and the meaning of terms “yin” and “yang”, and explains the later developed yin yang doctrine; it then shows how greatly and profoundly the yin yang model of thinking has influenced Chinese philosophy and Chinese character. It concludes that Chinese (...)
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  40. Non-scientific Sources of the Big Bang Model and its Interpretations.Gregory Bugajak - 2000 - In Niels Henrik Gregersen, Ulf Görman & Willem B. Drees (eds.), Studies in Science and Theology, vol. 7(1999–2000), University of Aarhus, Aarhus. pp. 151–159.
    In considering relations between science and theology, the discussion of the Big Bang model plays a significant role. Amongst the sources of this model there are not only scientific achievements of recent decades taken as objective knowledge as seen in modern methodology, but also many non-scientific factors. The latter is connected with the quite obvious fact that the authors, as well as the recipients of the Model, are people who are guided in their activity - including obtaining their rational knowledge (...)
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  41. ΛCDM and MOND: A debate about models or theory?Melissa Jacquart - 2021 - Studies in History and Philosophy of Science Part A 89 (C):226-234.
    The debate between ΛCDM and MOND is often cast in terms of competing gravitational theories. However, recent philosophical discussion suggests that the ΛCDM–MOND debate demonstrates the challenges of multiscale modeling in the context of cosmological scales. I extend this discussion and explore what happens when the debate is thought to be about modeling rather than about theory, offering a model-focused interpretation of the ΛCDM–MOND debate. This analysis shows how a model-focused interpretation of the debate provides a better understanding of challenges (...)
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  42.  86
    Trouble with Hubble: Status of the Big Bang Models.Chris Smeenk - 2022 - Philosophy of Science 89 (5):1265-1274.
    Cosmologists take the $\Lambda$CDM model to be a permanent contribution to our knowledge of the universe, based on the success of precision cosmology. Consistent, independent determinations of the parameters in this model encourage physicists to take it seriously. This stance incurs an obligation to resolve any discrepancies by reanalyzing measurements or adding further complexity. Recent observations in cosmology indicate a tension between “local” and “global” determinations of the Hubble constant. Here I argue that this tension illustrates one of (...)
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  43. The case of quantum mechanics mathematizing reality: the “superposition” of mathematically modelled and mathematical reality: Is there any room for gravity?Vasil Penchev - 2020 - Cosmology and Large-Scale Structure eJournal (Elsevier: SSRN) 2 (24):1-15.
    A case study of quantum mechanics is investigated in the framework of the philosophical opposition “mathematical model – reality”. All classical science obeys the postulate about the fundamental difference of model and reality, and thus distinguishing epistemology from ontology fundamentally. The theorems about the absence of hidden variables in quantum mechanics imply for it to be “complete” (versus Einstein’s opinion). That consistent completeness (unlike arithmetic to set theory in the foundations of mathematics in Gödel’s opinion) can be interpreted furthermore as (...)
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  44. Why Boltzmann Brains Are Bad.Sean M. Carroll - 2017 - In Shamik Dasgupta, Brad Weslake & Ravit Dotan (eds.), Current Controversies in Philosophy of Science. London: Routledge. pp. 7-20.
    Some modern cosmological models predict the appearance of Boltzmann Brains: observers who randomly fluctuate out of a thermal bath rather than naturally evolving from a low-entropy Big Bang. A theory in which most observers are of the Boltzmann Brain type is generally thought to be unacceptable, although opinions differ. I argue that such theories are indeed unacceptable: the real problem is with fluctuations into observers who are locally identical to ordinary observers, and their existence cannot be swept under the rug (...)
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  45. Feyerabend’s rule and dark matter.David Merritt - 2021 - Synthese 199 (3-4):8921-8942.
    Paul Feyerabend argued that theories can be faced with experimental anomalies whose refuting character can only be recognized by developing alternatives to the theory. The alternate theory must explain the experimental results without contrivance and it must also be supported by independent evidence. I show that the situation described by Feyerabend arises again and again in experiments or observations that test the postulates in the standard cosmological model relating to dark matter. The alternate theory is Milgrom’s modified dynamics. I discuss (...)
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  46. Are the Barriers that Inhibit Mathematical Models of a Cyclic Universe, which Admits Broken Symmetries, Dark Energy, and an Expanding Multiverse, Illusory?Bhupinder Singh Anand - manuscript
    We argue the thesis that if (1) a physical process is mathematically representable by a Cauchy sequence; and (2) we accept that there can be no infinite processes, i.e., nothing corresponding to infinite sequences, in natural phenomena; then (a) in the absence of an extraneous, evidence-based, proof of `closure' which determines the behaviour of the physical process in the limit as corresponding to a `Cauchy' limit; (b) the physical process must tend to a discontinuity (singularity) which has not been reflected (...)
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  47. God, Causality, and the creation of the universe.Gustavo E. Romero - 2004 - INVENIO 7 (13):11-20.
    The Kalam Cosmological Argument is perhaps the most solid and widely discussed argument for a caused creation of the universe. The usual objections to the argument mainly focus on the second premise. In this paper we discuss the dependency of the first premise on the topological structure of the space-time manifold adopted for the underlying cosmological model. It is shown that in chronology-violating space-times the first premise can also be violated. The chronology-violation, in turn, requires a massive violation of the (...)
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  48. MOND and Methodology.David Merritt - 2021 - In Parusniková Zuzana & Merritt David (eds.), Karl Popper's Science and Philosophy. Cham, Switzerland: Springer. pp. 69-96.
    In Logik der Forschung (1934) and later works, Karl Popper proposed a set of methodological rules for scientists. Among these were requirements that theories should evolve in the direction of increasing content, and that new theories should only be accepted if some of their novel predictions are experimentally confirmed. There are currently two, viable theories of cosmology: the standard cosmological model, and a theory due to Mordehai Milgrom called MOND. Both theories can point to successes and failures, but only (...)
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  49. Neo-Lorentzian Relativity and the Beginning of the Universe.Daniel Linford - 2021 - European Journal for Philosophy of Science 11 (4):1-38.
    Many physicists have thought that absolute time became otiose with the introduction of Special Relativity. William Lane Craig disagrees. Craig argues that although relativity is empirically adequate within a domain of application, relativity is literally false and should be supplanted by a Neo-Lorentzian alternative that allows for absolute time. Meanwhile, Craig and co-author James Sinclair have argued that physical cosmology supports the conclusion that physical reality began to exist at a finite time in the past. However, on their view, (...)
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  50. Programming relativity and gravity via a discrete pixel space in Planck level Simulation Hypothesis models.Malcolm J. Macleod - manuscript
    Outlined here is a simulation hypothesis approach that uses an expanding (the simulation clock-rate measured in units of Planck time) 4-axis hyper-sphere and mathematical particles that oscillate between an electric wave-state and a mass (unit of Planck mass per unit of Planck time) point-state. Particles are assigned a spin axis which determines the direction in which they are pulled by this (hyper-sphere pilot wave) expansion, thus all particles travel at, and only at, the velocity of expansion (the origin of $c$), (...)
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