A step beyond the bounce: Bubble dynamics in quantum phase transitions

Yoav Bergner, Luís M.A. Bettencourt

Research output: Contribution to journalArticlepeer-review


We study the dynamical evolution of a phase interface or bubble in the context of a λΦ4+gΦ6 scalar quantum field theory. We use a self-consistent mean-field approximation derived from a 2PI effective action to construct an initial value problem for the expectation value of the quantum field and two-point function. We solve the equations of motion numerically in 1+1 dimensions and compare the results to the purely classical evolution. We find that the quantum fluctuations dress the classical profile, affecting both the early time expansion of the bubble and the behavior upon collision with a neighboring interface.

Original languageEnglish (US)
Article number025014
JournalPhysical Review D
Issue number2
StatePublished - 2003

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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