Spontaneous symmetry breaking vacuum energy in cosmology

doi:10.1088/1674-1056/21/7/079801

Abstract The gravitational effect of spontaneous symmetry breaking vacuum energy density is investigated by subtracting the flat space–time contribution from the energy in the curved space–time. We find that the remaining effective energy– momentum tensor is too small to cause the acceleration of the universe, although it satisfies the characteristics of dark energy. However, it could provide a promising explanation to the puzzle of why the gravitational effect produced by the huge symmetry breaking vacuum energy in the electroweak theory has not been observed, as it has a sufficiently small value (smaller than the observed cosmic energy density by a factor of 10³²).

Keywords: vacuum energy density cosmology constant spontaneous symmetry breaking

Received: 14 September 2011
Revised: 08 March 2012
Accepted manuscript online:

PACS:	98.80.-k	(Cosmology)
	95.36.+x	(Dark energy)
	04.62.+v	(Quantum fields in curved spacetime)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10875060, 10975180 and 11047025).

Corresponding Authors: Yue Rui-Hong, Yang Zhan-Ying
E-mail: yueruihong@nbu.edu.cn;zyyang@nwu.edu.cn

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Zhou Kang(周康), Yue Rui-Hong(岳瑞宏), Yang Zhan-Ying(杨战营), and Zou De-Cheng(邹德成) Spontaneous symmetry breaking vacuum energy in cosmology 2012 Chin. Phys. B 21 079801

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