Fate of initial perturbation in the Jordan-Brans-Dicke gravity

Y. Suzuki, M. Yoshimura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


During the epoch of extended inflation the variation of the gravitational constant is crucial to facilitate the percolation of a true vacuum. In a relevant gravity theory we analyze the problem of evolving instability against linear perturbation in a static spherically symmetric background by constructing an exact solution to the Cauchy problem. Our analysis greatly affects primordial black-hole formation and gravitational-wave emission during extended inflation.

Original languageEnglish
Pages (from-to)2549-2554
Number of pages6
JournalPhysical Review D
Issue number8
Publication statusPublished - Jan 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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