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Time travel and time machines

In Craig Callender (ed.), The Oxford Handbook of Philosophy of Time. Oxford: Oxford University Press. pp. 577-630 (2009)

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  1. Buclele cauzale în călătoria în timp.Nicolae Sfetcu - manuscript
    În această lucrare analizez posibilitatea călătoriei în timp pe baza mai multor lucrări de specialitate, printre care cele ale lui Nicholas J.J. Smith ("Time Travel", The Stanford Encyclopedia of Philosophy”), William Grey (”Troubles with Time Travel”), Ulrich Meyer (”Explaining causal loops”), Simon Keller și Michael Nelson (”Presentists should believe in time-travel”), Frank Arntzenius și Tim Maudlin ("Time Travel and Modern Physics") și David Lewis (“The Paradoxes of Time Travel”). Lucrarea începe cu o Introducere în care fac o scurtă prezentare a (...)
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  • Paradoxes of Causal Loops in Spacetime.Nicolae Sfetcu - manuscript
    There is, among some scientists and philosophers, the idea that any theory that would allow the time travel would introduce causal issues. These types of temporal paradoxes can be avoided by the Novikov self-consistency principle or by a variation in the interpretation of many worlds with interacting worlds. The world in which we live has, according to David Lewis, a Parmenidean ontology: "a manifold of events in four dimensions," and the occupants of the world are the 4-dimensional aggregates of the (...)
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  • Causal Loops in Time Travel.Nicolae Sfetcu - manuscript
    About the possibility of time traveling based on several specialized works, including those of Nicholas J. J. Smith ("Time Travel"), William Grey (”Troubles with Time Travel”), Ulrich Meyer (”Explaining causal loops”), Simon Keller and Michael Nelson (”Presentists should believe in time-travel”), Frank Arntzenius and Tim Maudlin ("Time Travel and Modern Physics"), and David Lewis (“The Paradoxes of Time Travel”). The article begins with an Introduction in which I make a short presentation of the time travel, and continues with a History (...)
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  • Călătoria în timp.Nicolae Sfetcu - manuscript
    Călătoria în timp implică deplasarea într-un timp diferit de cel prezent, în trecut sau în viitor, în principiu fără o deplasare în spațiu cu referire la un sistem de coordonate local. Călătoria în timp poate fi făcută de un corp material care poate fi sau nu o ființă vie, și pentru care se folosește de obicei un dispozitiv special denumit mașina timpului. Călătoria în timp este un concept recunoscut în filosofie și știință, dar a cărui posibilitatea este foarte disputată, dând (...)
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  • Malament–Hogarth Machines.J. B. Manchak - 2020 - British Journal for the Philosophy of Science 71 (3):1143-1153.
    This article shows a clear sense in which general relativity allows for a type of ‘machine’ that can bring about a spacetime structure suitable for the implementation of ‘supertasks’. 1Introduction2Preliminaries3Malament–Hogarth Spacetimes4Machines5Malament–Hogarth Machines6Conclusion.
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  • Time Travel and Time Machines.Douglas Kutach - 2013 - In Adrian Bardon & Heather Dyke (eds.), A Companion to the Philosophy of Time. Blackwell.
    Thinking about time travel is an entertaining way to explore how to understand time and its location in the broad conceptual landscape that includes causation, fate, action, possibility, experience, and reality. It is uncontroversial that time travel towards the future exists, and time travel to the past is generally recognized as permitted by Einstein’s general theory of relativity, though no one knows yet whether nature truly allows it. Coherent time travel stories have added flair to traditional debates over the metaphysical (...)
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  • On Time Chez Dummett.Jeremy Butterfield - unknown
    I discuss three connections between Dummett's writings about time and philosophical aspects of physics. The first connection arises from remarks of Dummett's about the different relations of observation to time and to space. The main point is uncontroversial and applies equally to classical and quantum physics. It concerns the fact that perceptual processing is so rapid, compared with the typical time-scale on which macroscopic objects change their observable properties, that it engenders the idea of a `common now', spread across space. (...)
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  • Corrigendum To: Does Artistic Value Pose a Special Problem for Time Travel Theories?James W. McAllister - 2020 - British Journal of Aesthetics 60 (1):113-113.
    Brit J Aesthetics DOI:_ 10.1093/aesthj/ayz041 _.
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  • Does Artistic Value Pose a Special Problem for Time Travel Theories?James W. McAllister - 2020 - British Journal of Aesthetics 60 (1):61-69.
    Michael Dummett and Storrs McCall have claimed that time travel scenarios in which an artist copies an artwork from a reproduction of it that has been sent from the future introduce a causal loop of a new kind: one involving artistic value. They have suggested that this poses a hitherto unacknowledged challenge to time travel theories. I argue that their conclusion depends on some unstated essentialist assumptions about metaphysics of art and the status of representations. By relaxing these assumptions, I (...)
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  • Voyage dans le temps.Nicolae Sfetcu - manuscript
    Une autre définition du voyage dans le temps (Arntzenius 2006) (Smeenk and Wüthrich 2011) l'assimile à l'existence des courbes temporelles fermées, une variété lorentzienne d'une particule matérielle dans l'espace-temps qui revient à son point de départ. Certains auteurs acceptent l’existence de deux dimensions temporelles et d’autres envisagent des scénarios comportant plusieurs univers « parallèles », chacun ayant son propre espace-temps à quatre dimensions.Mais la question est de savoir si un voyage dans une autre dimension temporelle ou dans un autre univers (...)
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  • No Presentism in Quantum Gravity.Christian Wüthrich - 2010 - In Vesselin Petkov (ed.), Space, Time, and Spacetime: Physical and Philosophical Implications of Minkowski's Unification of Space and Time. Springer.
    This essay offers a reaction to the recent resurgence of presentism in the philosophy of time. What is of particular interest in this renaissance is that a number of recent arguments supporting presentism are crafted in an untypically naturalistic vein, breathing new life into a metaphysics of time with a bad track record of co-habitation with modern physics. Against this trend, the present essay argues that the pressure on presentism exerted by special relativity and its core lesson of Lorentz symmetry (...)
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  • Time Travel.Nicolae Sfetcu - manuscript
    Time travel is a recognized concept in philosophy and science, but whose scope is highly disputed, giving rise to numerous paradoxes in both philosophy and science. Time travel is considered by some accepted both in general relativity and quantum mechanics, but there is a unanimous consensus that it is not feasible with current technology. (Hawkins 2010) The raised issues are different for the time travel in the past compared to the time travel in the future.
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  • Time in Classical and Relativistic Physics.Gordon Belot - 2013 - In Adrian Bardon & Heather Dyke (eds.), A Companion to the Philosophy of Time. Blackwell. pp. 185-200.
    This is a short, nontechnical introduction to features of time in classical and relativistic physics and their representation in the four-dimensional geometry of spacetime. Topics discussed include: the relativity of simultaneity in special and general relativity; the ‘twin paradox’ and differential aging effects in special and general relativity; and time travel in general relativity.
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  • Similarity, Topology, and Physical Significance in Relativity Theory.Samuel C. Fletcher - 2016 - British Journal for the Philosophy of Science 67 (2):365-389.
    Stephen Hawking, among others, has proposed that the topological stability of a property of space-time is a necessary condition for it to be physically significant. What counts as stable, however, depends crucially on the choice of topology. Some physicists have thus suggested that one should find a canonical topology, a single ‘right’ topology for every inquiry. While certain such choices might be initially motivated, some little-discussed examples of Robert Geroch and some propositions of my own show that the main candidates—and (...)
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  • Theoriegeleitete Bestimmung von Objektmengen und Beobachtungsintervallen am Beispiel des Halleyschen Kometen.Ulrich Gähde - 2012 - Philosophia Naturalis 49 (2):207-224.
    The starting point of the following considerations is a case study concerning the discovery of Halley's comet and the theoretical description of its path. It is shown that the set of objects involved in that system and the time interval during which their paths are observed are determined in a theory dependent way – thereby making use of the very theory later used for that system's theoretical description. Metatheoretical consequences this fact has with respect to the structuralist view of empirical (...)
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  • Global Spacetime Structure.John Byron Manchak - unknown
    Here, we outline the basic structure of relativistic spacetime and record a number of facts. We then consider a distinction between local and global spacetime properties and provide important examples of each. We also examine two clusters of global properties and question which of them should be regarded as physically reasonable. The properties concern "singularities" and "time travel" and are therefore of some philosophical interest.
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  • The Structure of Causal Sets.Christian Wüthrich - 2012 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 43 (2):223-241.
    More often than not, recently popular structuralist interpretations of physical theories leave the central concept of a structure insufficiently precisified. The incipient causal sets approach to quantum gravity offers a paradigmatic case of a physical theory predestined to be interpreted in structuralist terms. It is shown how employing structuralism lends itself to a natural interpretation of the physical meaning of causal set theory. Conversely, the conceptually exceptionally clear case of causal sets is used as a foil to illustrate how a (...)
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  • Essay Review of David Malament, Topics in the Foundations of General Relativity and Newtonian Gravitation Theory.John Byron Manchak - unknown
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  • Time Machines.John Byron Manchak - 2014 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 48 (2):124-127.
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  • A Remark on ‘Time Machines’ in Honor of Howard Stein.J. B. Manchak - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 67:111-116.
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  • On Time Chez Dummett.Jeremy Butterfield - 2012 - European Journal of Analytic Philosophy 8 (1):77-102.
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  • Symmetry, Ontology and the Problem of Time: On the Interpretation and Quantisation of Canonical Gravity.Karim P. Y. Thebault - unknown
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  • Gretchenfragen an den Naturalisten.Gerhard Vollmer - 2012 - Philosophia Naturalis 49 (2):239-291.
    A philosophical position may be characterized in different ways. Here we try to say how the naturalist answers certain . The questions come from very different areas; the spectrum of subjects is therefore quite mixed. There are, however, aspects of order: We start with (questions about) abstract subjects like logic, mathematics, metaphysics, then turn to problems of realism. And since in general naturalists are realists, the following questions on truth, laws of nature, origin of the universe, cosmology, evolution, body-mind-problem, freedom (...)
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  • No No-Go: A Remark on Time Machines.John Byron Manchak - 2011 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 42 (1):74-76.
    We present a counterexample to Krasnikov's much discussed time machine no-go result. In addition, we prove a positive statement: a time machine existence theorem under a modest "no holes" assumption.
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  • Ways to Commit Autoinfanticide.John W. Carroll - 2016 - Journal of the American Philosophical Association 2 (1):180--191.
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  • Supertasks.Jon Pérez Laraudogoitia - 2008 - Stanford Encyclopedia of Philosophy.
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  • Time Machines.John Earman - 2008 - Stanford Encyclopedia of Philosophy.
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