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Entropy 2012, 14(4), 614-629; doi:10.3390/e14040614

Modeling Time’s Arrow

2,* , 3
1 National Institute for Theoretical Physics, School of Physics and Centre for Theoretical Physics, University of the Witwatersrand, WITS 2050, Johannesburg, South Africa 2 Department of Physics, Long Island University, 1 University Plaza, Brooklyn, NY 11201, USA 3 Department of Physics, Virginia Tech, Blacksburg, VA 24061, USA
* Author to whom correspondence should be addressed.
Received: 2 February 2012 / Revised: 13 March 2012 / Accepted: 19 March 2012 / Published: 23 March 2012
(This article belongs to the Special Issue Arrow of Time)
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Quantum gravity, the initial low entropy state of the Universe, and the problem of time are interlocking puzzles. In this article, we address the origin of the arrow of time from a cosmological perspective motivated by a novel approach to quantum gravitation. Our proposal is based on a quantum counterpart of the equivalence principle, a general covariance of the dynamical phase space. We discuss how the nonlinear dynamics of such a system provides a natural description for cosmological evolution in the early Universe. We also underscore connections between the proposed non-perturbative quantum gravity model and fundamental questions in non-equilibrium statistical physics.
Keywords: quantum gravity; arrow of time; non-equilibrium physics quantum gravity; arrow of time; non-equilibrium physics
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Jejjala, V.; Kavic, M.; Minic, D.; Tze, C.-H. Modeling Time’s Arrow. Entropy 2012, 14, 614-629.

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