Entropy, black holes, and the new cyclic universe

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Anna Ijjas
  • Paul J. Steinhardt

Organisationseinheiten

Externe Organisationen

  • Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
  • Princeton University
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer136823
FachzeitschriftPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Jahrgang824
Frühes Online-Datum8 Dez. 2021
PublikationsstatusVeröffentlicht - 10 Jan. 2022

Abstract

We track the evolution of entropy and black holes in a cyclic universe that undergoes repeated intervals of expansion followed by slow contraction and a smooth (non-singular) bounce. In this kind of cyclic scenario, there is no big crunch and no chaotic mixmaster behavior. We explain why the entropy following each bounce is naturally partitioned into near-maximal entropy in the matter-radiation sector and near-minimal in the gravitational sector, satisfying the Weyl curvature conditions conjectured to be essential for a cosmology consistent with observations. As a result, this kind of cyclic universe can undergo an unbounded number of cycles in the past and/or the future.

ASJC Scopus Sachgebiete

Zitieren

Entropy, black holes, and the new cyclic universe. / Ijjas, Anna; Steinhardt, Paul J.
in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Jahrgang 824, 136823, 10.01.2022.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Ijjas A, Steinhardt PJ. Entropy, black holes, and the new cyclic universe. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2022 Jan 10;824:136823. Epub 2021 Dez 8. doi: 10.1016/j.physletb.2021.136823, 10.48550/arXiv.2108.07101
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