Self-excitation of the tunneling scalar field in false vacuum decay

Physical Review D - Particles, Fields, Gravitation and Cosmology Volume 53 Issue 4 Page 2045-2061 published_at 1996-02-15
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Title ( eng )
Self-excitation of the tunneling scalar field in false vacuum decay
Creator
Hamazaki Takashi
Sasaki Misao
Source Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume 53
Issue 4
Start Page 2045
End Page 2061
Abstract
A method to determine the quantum state of a scalar field after O(4)-symmetric bubble nucleation has been developed recently. The method has the advantage that it concisely gives us a clear picture of the resultant quantum state. In particular, one may interpret the excitations as a particle creation phenomenon just as in the case of particle creation in curved spacetime. As an application, we investigate in detail the spectrum of quantum excitations of the tunneling field when it undergoes false vacuum decay. We consider a tunneling potential which is piecewise quadratic and hence, is simple enough to allow us an analytical treatment. We find a strong dependence of the excitation spectrum upon the shape of the potential on the true vacuum side. We then discuss features of the excitation spectrum common to general tunneling potentials not restricted to our simple model.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 1996-02-15
Rights
Copyright (c) 1996 The American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.53.2045
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.53.2045