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

Yoav Bergner, Luís M A Bettencourt

Research output: Contribution to journalArticle

Abstract

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
Volume68
Issue number2
DOIs
StatePublished - 2003

Fingerprint

Bubble Dynamics
Quantum Phase Transition
Bounce
Bubble
bubbles
Quantum Fluctuations
Quantum Fields
Mean-field Approximation
Effective Action
Quantum Field Theory
boundary value problems
Scalar Field
Initial Value Problem
Equations of Motion
equations of motion
Collision
scalars
collisions
expansion
profiles

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

A step beyond the bounce : Bubble dynamics in quantum phase transitions. / Bergner, Yoav; Bettencourt, Luís M A.

In: Physical Review D, Vol. 68, No. 2, 025014, 2003.

Research output: Contribution to journalArticle

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