A Step Beyond the Bounce: Bubble Dynamics in Quantum Phase Transitions

Abstract

We study the dynamical evolution of a phase interface or bubble in the context of a λϕ^4 + g ϕ^6 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.

12 pages, multiple figures

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• Semiclassical force for electroweak baryogenesis: three-dimensional derivation
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Cited by in corpus (10)

• Quantum dynamics and thermalization for out-of-equilibrium phi^4-theory
• Real-time dynamics of false vacuum decay
• The self-consistent bounce: an improved nucleation rate
• Dressing Up the Kink
• Particle production and hadronization temperature in the massive Schwinger model
• Self-consistent radiative corrections to false vacuum decay
• Time dependent action in ${\varphi }^6$ potential
• Extended Metastable Dark Energy
• Bubble formation in ${\varphi }^6$ potential
• Finite Temperature Phase Transition in ${\varphi }^6$ potential