Spontaneous symmetry breaking vacuum energy in cosmology
The gravitational effect of spontaneous symmetry breaking vacuum energy density is investigated by subtracting the fiat 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 univers...
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Veröffentlicht in: | Chinese physics B 2012-07, Vol.21 (7), p.617-622 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The gravitational effect of spontaneous symmetry breaking vacuum energy density is investigated by subtracting the fiat 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). |
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ISSN: | 1674-1056 2058-3834 1741-4199 |
DOI: | 10.1088/1674-1056/21/7/079801 |