Born again universe

Graham, Peter W.; Kaplan, David E.; Rajendran, Surjeet

doi:10.1103/physrevd.97.044003

Title: Born again universe

Journal Article · 02 February 2018 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.97.044003 · OSTI ID:1419403

Graham, Peter W. ^[1]; Kaplan, David E. ^[2]; Rajendran, Surjeet ^[3]

Stanford Univ., Stanford, CA (United States)
Johns Hopkins Univ., Baltimore, MD (United States)
Univ. of California, Berkeley, CA (United States)

We present a class of nonsingular, bouncing cosmologies that evade singularity theorems through the use of vorticity in compact extra dimensions. The vorticity combats the focusing of geodesics during the contracting phase. The construction requires fluids that violate the null energy condition (NEC) in the compact dimensions, where they can be provided by known stable NEC violating sources such as Casimir energy. The four dimensional effective theory contains an NEC violating fluid of Kaluza-Klein excitations of the higher dimensional metric. Furthermore, these spacetime metrics could potentially allow dynamical relaxation to solve the cosmological constant problem. These ideas can also be used to support traversable Lorentzian wormholes.

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Research Organization:: Stanford Univ., CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0012012

OSTI ID:: 1419403

Alternate ID(s):: OSTI ID: 1501442

Journal Information:: Physical Review. D., Vol. 97, Issue 4; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 15 works

Citation information provided by
Web of Science

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Bouncing cosmology made simple Ijjas, Anna; Steinhardt, Paul J. Classical and Quantum Gravity, Vol. 35, Issue 13 https://doi.org/10.1088/1361-6382/aac482	journal	June 2018
Relaxation of the cosmological constant Graham, Peter W.; Kaplan, David E.; Rajendran, Surjeet Physical Review D, Vol. 100, Issue 1 https://doi.org/10.1103/physrevd.100.015048	journal	July 2019