PhilSci Archive

Take a Ride on a Time Machine

Earman, John and Smeenk, Christopher and Wuthrich, Christian (2003) Take a Ride on a Time Machine. [Preprint]

WarningThere is a more recent version of this item available.
[img]
Preview
PDF
Download (1412Kb) | Preview

    Abstract

    We discuss the possibility to build and operate a time machine, a device that produces closed timelike curves (CTCs). We specify the spacetime structure needed to implement a time machine and assess attempted no-go results against time machines in classical general relativity, semi-classical quantum gravity, quantum field theory on curved spacetime, and in Euclidean quantum gravity. Such no-go theorems for time machines would show that, under physically reasonable conditions, CTCs cannot develop in spacetimes initially free of these pathologies. Our review indicates that an investigation of the prospects of achieving no-go results has not been entirely successful in establishing such generality. At the same time, the pursuit of chronology protection results has proved to be a fruitful way to probe the foundations of classical GTR and the interface between general relativity and quantum field theory.


    Export/Citation:EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
    Social Networking:

    Item Type: Preprint
    Keywords: Time machines, time travel, causality, closed timelike curves, potency condition, classical general relativity, semi-classical quantum gravity, quantum field theory on curved spacetime, Euclidean quantum gravity
    Subjects: Specific Sciences > Physics > Relativity Theory
    Specific Sciences > Physics
    Specific Sciences > Physics > Quantum Field Theory
    Depositing User: Christian Wuthrich
    Date Deposited: 19 Mar 2004
    Last Modified: 07 Oct 2010 11:12
    Item ID: 1673
    URI: http://philsci-archive.pitt.edu/id/eprint/1673

    Available Versions of this Item

    Actions (login required)

    View Item

    Document Downloads