One time, two times, or no time?
History and Philosophy of Physics
2020-09-14 v2 General Relativity and Quantum Cosmology
Abstract
Contemporary research programs in fundamental physics appear to suggest that there could be two (physical) times---or none at all. This essay articulates these possibilities in the context of quantum gravity, and in particular of cosmological models developed in an approach called `loop quantum gravity', and explains how they could nevertheless underwrite our manifestly temporal world. A proper interpretation of these models requires a negotiation of an atemporal and a temporal sense of the emergence of (space)time.
Cite
@article{arxiv.2009.02965,
title = {One time, two times, or no time?},
author = {Christian Wuthrich},
journal= {arXiv preprint arXiv:2009.02965},
year = {2020}
}
Comments
15 pages; minor revisions