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. https://doi.org/10.1103/PhysRevD.97.044003
Graham, Peter W., Kaplan, David E., and Rajendran, Surjeet. Fri .
"Born again universe". United States. https://doi.org/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}
}
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https://doi.org/10.1103/PhysRevD.97.044003
https://doi.org/10.1103/PhysRevD.97.044003
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Figures / Tables:
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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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.