Wuthrich, Christian (2019) Time travelling in emergent spacetime. [Preprint]

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Abstract

Most approaches to quantum gravity suggest that relativistic spacetime is not fundamental, but instead emerges from some non-spatiotemporal structure. This paper investigates the implications of this suggestion for the possibility of time travel in the sense of the existence of closed timelike curves in some relativistic spacetimes. In short, will quantum gravity reverse or strengthen general relativity's verdict that time travel is possible?

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Item Type:	Preprint
Creators:	Creators Email ORCID Wuthrich, Christian christian.wuthrich@unige.ch 0000-0001-8774-6160
Additional Information:	17 pages, 1 figure.
Keywords:	Time travel, Quantum gravity, General relativity, Emergence, Semi-classical quantum gravity, Causal set theory, Loop quantum gravity, String theory
Subjects:	Specific Sciences > Physics Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Relativity Theory
Depositing User:	Christian Wuthrich
Date Deposited:	22 Jun 2019 13:42
Last Modified:	22 Jun 2019 13:42
Item ID:	16143
Subjects:	Specific Sciences > Physics Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Relativity Theory
Date:	21 June 2019
URI:	https://philsci-archive.pitt.edu/id/eprint/16143

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