Relaxation of the cosmological constant
Relaxation of the cosmological constant
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宇宙常数的弛豫
DOI:
10.1103/physrevd.100.015048
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发表时间:
2019
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 model that naturally tunes a large positive cosmological constant to a small cosmological constant. A slowly rolling scalar field decreases the cosmological constant to a small negative value, causing the universe to contract, thus reheating it. An expanding universe with a small positive cosmological constant can be obtained, respectively, by coupling this solution to any model of a cosmological bounce and coupling the scalar field to a sector that undergoes a technically natural phase transition at the meV scale. A robust prediction of this model is a rolling scalar field today with some coupling to the standard model. This can potentially be experimentally probed in a variety of cosmological and terrestrial experiments, such as probes of the equation of state of dark energy, birefringence in the cosmic microwave background and terrestrial tests of Lorentz violation.
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影响因子:
3.5
作者:
M. Pospelov;M. Romalis
通讯作者:
M. Romalis
影响因子:
5
作者:
Benato, Giovanni;Drobizhev, Alexey;Rajendran, Surjeet;Ramani, Harikrishnan
通讯作者:
Ramani, Harikrishnan
影响因子:
5
作者:
Graham, Peter W.;Kaplan, David E.;Rajendran, Surjeet
通讯作者:
Rajendran, Surjeet
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