Nonrestoration of spontaneously broken P and CP at high temperature
Abstract
The possibility of P and CP violation at high temperature in models where these symmetries are spontaneously broken is investigated. It is found that in minimal models that include singlet fields, high T nonrestoration is possible for a wide range of parameters of the theory, in particular, in models of CP violation with a CP-odd Higgs field. The same holds true for the invisible axion version of the Peccei-Quinn mechanism. This can provide both a way out for the domain wall problem in these theories and the CP violation required for baryogenesis. In the case of spontaneous P violation it turns out that high T nonrestoration requires going beyond the minimal model. The results are shown to hold true when next-to-leading order effects are considered.
- Publication:
-
Physical Review D
- Pub Date:
- December 1996
- DOI:
- 10.1103/PhysRevD.54.7857
- arXiv:
- arXiv:hep-ph/9601376
- Bibcode:
- 1996PhRvD..54.7857D
- Keywords:
-
- 11.30.Qc;
- 11.10.Wx;
- 11.30.Er;
- 98.80.Cq;
- Spontaneous and radiative symmetry breaking;
- Finite-temperature field theory;
- Charge conjugation parity time reversal and other discrete symmetries;
- Particle-theory and field-theory models of the early Universe;
- High Energy Physics - Phenomenology;
- Astrophysics
- E-Print:
- 22 pages, 3 figures, uses psfig. Replaced version with the Latex source