Born again universe
Born again universe
复制标题
重生宇宙
DOI:
10.1103/physrevd.97.044003
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发表时间:
2018
影响因子:
5
通讯作者:
Rajendran, Surjeet
中科院分区:
文献类型:
--
作者:
Graham, Peter W.;Kaplan, David E.;Rajendran, Surjeet
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. 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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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
P. Steinhardt;D. Wesley
通讯作者:
D. Wesley
影响因子:
5
作者:
T. Appelquist;A. Chodos
通讯作者:
A. Chodos
DOI:
10.4213/tmf5532
发表时间:
2006
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
Валерий Анатольевич Рубаков;V. A. Rubakov
通讯作者:
V. A. Rubakov
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
L. Abbott
通讯作者:
L. Abbott
影响因子:
4
作者:
V. Rubakov
通讯作者:
V. Rubakov