Lagger, C. (2018) Cosmological phase transitions in the Standard Model with hidden scale invariance. Il nuovo cimento C, 41 (4). pp. 1-5. ISSN 1826-9885
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Abstract
The Standard Model of particle physics is minimally extended by a dilaton field. This field expresses the spontaneous breaking of scale invariance of an unspecified ultraviolet complete theory. While being manifestly scale invariant at the classical level, the low energy theory admits quantum scale anomaly responsible for the generation of mass scales. In addition to predicting a very small dilaton mass, this model has important consequences for the cosmology of the early universe. The electroweak phase transition can only be triggered by the QCD chiral phase transition occurring around 132 MeV. Since the QCD transition is expected to be first order in this picture, such a scenario gives rise to the production of stochastic gravitational waves with a peak frequency around ∼ 10−8 Hz.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 24 Nov 2020 14:11 |
| Last Modified: | 24 Nov 2020 14:11 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20263 |
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