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

Takashi Hamazaki, Misao Sasaki, Takahiro Tanaka, Kazuhiro Yamamoto

研究成果: Contribution to journalArticle査読

42 被引用数 (Scopus)


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.

ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
出版ステータス出版済み - 1996

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)


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