Lee, Bum-Hoon and Lee, Chul H. and Lee, Wonwoo and Oh, Changheon (2013) Oscillating instanton solutions and classification of vacuum bubbles. Il nuovo cimento C, 36 (Sup. 1). pp. 89-98. ISSN 1826-9885
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Abstract
We discuss the nucleation process of an oscillating instanton solution and a vacuum bubble in this presentation. We show that there exist the O(4)- symmetric oscillating instanton solution and the vacuum bubbles with arbitrary energies. The nontrivial solution corresponding to the tunneling is possible only when gravity is switched on. The geometry of these solutions is finite and preserves the Z2 symmetry. The action for the solutions are integrable both in de Sitter and in flat background. The instatons do not have any singularity. Our solutions can be interpreted as solutions describing an instanton-induced domain wall or braneworldlike object rather than a kink-induced domain wall or braneworld. The oscillating instanton solutions have a thick wall and the solutions can be interpreted as a mechanism providing nucleation of the thick wall for topological inflation.
| Item Type: | Article |
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| Uncontrolled Keywords: | Quantum fields in curved spacetime ; Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.) |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 07 May 2020 17:13 |
| Last Modified: | 07 May 2020 17:13 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/18436 |
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