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Title: Born again universe

Abstract

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.

Authors:
; ;
Publication Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1419403
Alternate Identifier(s):
OSTI ID: 1501442
Grant/Contract Number:  
SC0012012
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 4; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Graham, Peter W., Kaplan, David E., and Rajendran, Surjeet. Born again universe. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.044003.
Graham, Peter W., Kaplan, David E., & Rajendran, Surjeet. Born again universe. United States. doi:10.1103/PhysRevD.97.044003.
Graham, Peter W., Kaplan, David E., and Rajendran, Surjeet. Fri . "Born again universe". United States. doi:10.1103/PhysRevD.97.044003.
@article{osti_1419403,
title = {Born again universe},
author = {Graham, Peter W. and Kaplan, David E. and Rajendran, Surjeet},
abstractNote = {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.},
doi = {10.1103/PhysRevD.97.044003},
journal = {Physical Review D},
number = 4,
volume = 97,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.97.044003

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: Corrections to the propagator G(x2, x1) from the perturbations O1, O2 and O3. There is also a diagram 2.d which is similar to 2.b and 2.c except that it has one sin θ vertex and one cos θ vertex and they are summed in both orders.

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Works referenced in this record:

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    Works referencing / citing this record:

    Relaxation of the cosmological constant
    journal, July 2019


      Figures / Tables found in this record:

        Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.