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 cosmology is described, in which dark energy 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 universe 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.

8 pages latex. Changes in wording. Discussion of radiation

References in corpus (16)

• A Large Mass Hierarchy from a Small Extra Dimension
• An Alternative to Compactification
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Phantom Energy and Cosmic Doomsday
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• Non-conventional cosmology from a brane-universe
• Cosmic Evolution in a Cyclic Universe
• A Cyclic Model of the Universe
• Inflationary spacetimes are not past-complete
• Cosmology of Brane Models with Radion Stabilization
• Why the cosmological constant is small and positive
• The Fate of Dark Energy
• A new duality relating density perturbations in expanding and contracting Friedmann cosmologies
• Bigger Rip with No Dark Energy
• Black Holes, Mergers, and the Entropy Budget of the Universe

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