Large-scale inhomogeneity of dark energy produced in the ancestor vacuum
Large-scale inhomogeneity of dark energy produced in the ancestor vacuum
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祖先真空中产生的暗能量的大规模不均匀性
DOI:
10.1103/physrevd.99.103512
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发表时间:
2019
影响因子:
5
通讯作者:
Yamauchi
中科院分区:
文献类型:
--
作者:
Yue Nan; Kazuhiro Yamamoto; Hajime Aoki; Satoshi Iso;; Daisuke;Yamauchi
We investigate large-scale inhomogeneity of dark energy in the bubble nucleation scenario of the universe. In this scenario, the present universe was created by a bubble nucleation due to quantum tunneling from a metastable ancestor vacuum, followed by a primordial inflationary era. During the bubble nucleation, supercurvature modes of some kind of a scalar field are produced, and remain until present without decaying; thus they can play a role of the dark energy, if the mass of the scalar field is sufficiently light in the present universe. The supercurvature modes fluctuate at a very large spatial scale, much longer than the Hubble length in the present universe. Thus they create large-scale inhomogeneities of the dark energy, and generate large-scale anisotropies in the cosmic microwave background (CMB) fluctuations. This is a notable feature of this scenario, where quantum fluctuations of a scalar field are responsible for the dark energy. In this paper, we calculate imprints of the scenario on the CMB anisotropies through the integrated Sachs-Wolfe (ISW) effect, and give observational constraints on the curvature parameterand on an additional parameterdescribing some properties of the ancestor vacuum.
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影响因子:
5
作者:
Appleby S
通讯作者:
Appleby S
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Ashutosh Tripathi;Archana Sangwan;H. K. Jassal
通讯作者:
H. K. Jassal
影响因子:
6.5
作者:
Ade, P. A. R.;Aghanim, N.;Zonca, A.
通讯作者:
Zonca, A.
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
J. Garriga;Xavier Montes;M. Sasaki;Takahiro Tanaka
通讯作者:
Takahiro Tanaka
影响因子:
5
作者:
R. Bousso;D. Harlow;L. Senatore
通讯作者:
R. Bousso;D. Harlow;L. Senatore