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Title: Turnaround in Cyclic Cosmology

Abstract

It is speculated how dark energy in a brane world can help reconcile an infinitely cyclic cosmology with the second law of thermodynamics. A cyclic model is described, in which dark energy with w<-1 equation of state leads to a turnaround at a time, extremely shortly before the would-be big rip, at which both volume and entropy of our Universe decrease by a gigantic factor, while very many independent similarly small contracting universes are spawned. The entropy of our model decreases almost to zero at turnaround but increases for the remainder of the cycle by a vanishingly small amount during contraction, empty of matter, then by a large factor during inflationary expansion.

Authors:
;  [1]
  1. University of North Carolina, Chapel Hill, North Carolina 27599-3255 (United States)
Publication Date:
OSTI Identifier:
20955462
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevLett.98.071301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BRANES; CONTRACTION; COSMOLOGICAL MODELS; COSMOLOGY; ENTROPY; EQUATIONS OF STATE; EXPANSION; NONLUMINOUS MATTER; STRING THEORY; THERMODYNAMICS; UNIVERSE

Citation Formats

Baum, Lauris, and Frampton, Paul H. Turnaround in Cyclic Cosmology. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.071301.
Baum, Lauris, & Frampton, Paul H. Turnaround in Cyclic Cosmology. United States. doi:10.1103/PHYSREVLETT.98.071301.
Baum, Lauris, and Frampton, Paul H. Fri . "Turnaround in Cyclic Cosmology". United States. doi:10.1103/PHYSREVLETT.98.071301.
@article{osti_20955462,
title = {Turnaround in Cyclic Cosmology},
author = {Baum, Lauris and Frampton, Paul H.},
abstractNote = {It is speculated how dark energy in a brane world can help reconcile an infinitely cyclic cosmology with the second law of thermodynamics. A cyclic model is described, in which dark energy with w<-1 equation of state leads to a turnaround at a time, extremely shortly before the would-be big rip, at which both volume and entropy of our Universe decrease by a gigantic factor, while very many independent similarly small contracting universes are spawned. The entropy of our model decreases almost to zero at turnaround but increases for the remainder of the cycle by a vanishingly small amount during contraction, empty of matter, then by a large factor during inflationary expansion.},
doi = {10.1103/PHYSREVLETT.98.071301},
journal = {Physical Review Letters},
number = 7,
volume = 98,
place = {United States},
year = {Fri Feb 16 00:00:00 EST 2007},
month = {Fri Feb 16 00:00:00 EST 2007}
}
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