Chua, Eugene Y. S. and Callender, Craig (2020) No Time for Time from No-Time. [Preprint]

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Abstract

Programs in quantum gravity often claim that time emerges from fundamentally timeless physics. In the semiclassical time program time arises only after approx- imations are taken. Here we ask what justifies taking these approximations and show that time seems to sneak in when answering this question. This raises the worry that the approach is either unjustified or circular in deriving time from no–time.

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Item Type:	Preprint
Creators:	Creators Email ORCID Chua, Eugene Y. S. eychua@ucsd.edu 0000-0002-3169-7563 Callender, Craig ccallender@ucsd.edu 0000-0002-9192-0018
Keywords:	quantum gravity time timeless semiclassical approximation
Subjects:	General Issues > Scientific Metaphysics Specific Sciences > Physics Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Quantum Mechanics Specific Sciences > Physics > Relativity Theory
Depositing User:	Craig Callender
Date Deposited:	10 Jan 2021 03:18
Last Modified:	10 Jan 2021 03:18
Item ID:	18587
Subjects:	General Issues > Scientific Metaphysics Specific Sciences > Physics Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Quantum Mechanics Specific Sciences > Physics > Relativity Theory
Date:	8 January 2020
URI:	https://philsci-archive.pitt.edu/id/eprint/18587

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