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No Time for Time from No-Time

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:
CreatorsEmailORCID
Chua, Eugene Y. S.eychua@ucsd.edu0000-0002-3169-7563
Callender, Craigccallender@ucsd.edu0000-0002-9192-0018
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-dev.library.pitt.edu/id/eprint/18587

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