Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1998-12-21
Phys.Rev.D59:101302,1999
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
12 pages, 3 figures, REVTeX
Scientific paper
10.1103/PhysRevD.59.101302
Chiral phase transitions driven by space-time curvature effects are investigated in de Sitter space in the supersymmetric Nambu-Jona-Lasinio model with soft supersymmetry breaking. The model is considered to be suitable for the analysis of possible phase transitions in inflationary universe. It is found that a restoration of the broken chiral symmetry takes place in two patterns for increasing curvature : the first order and second order phase transition respectively depending on initial settings of the four-body interaction parameter and the soft supersymmetry breaking parameter. The critical curves expressing the phase boundaries in these parameters are obtained. Cosmological implications of the result are discussed in connection with bubble formations and the creation of cosmic strings during the inflationary era.
Hashida J.
Mukaigawa Seiji
Muta Taizo
Ohkura Kazunari
Yamamoto Kaichi
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