Quantum state inside a vacuum bubble and the creation of an open universe

Misao Sasaki, Takahiro Tanaka, Kazuhiro Yamamoto, Jun'ichi Yokoyama

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

Using a prescription to obtain the quantum state of a scalar field during and after false vacuum decay, we consider a simple model in which the scalar field interacts with a thin-wall vacuum bubble. We find the state inside the bubble is Lorentz-invariant but has non-vanishing energy density. We argue that this result can be interpreted as the creation of a homogeneous and isotropic open universe with high entropy.

Original languageEnglish
Pages (from-to)510-516
Number of pages7
JournalPhysics Letters B
Volume317
Issue number4
DOIs
Publication statusPublished - Nov 18 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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