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

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

2002-06-05

arxiv.org/abs/hep-ph/0206053v2

Phys.Rev. D68 (2003) 025014

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, multiple figures

Scientific paper

10.1103/PhysRevD.68.025014

We study the dynamical evolution of a phase interface or bubble in the context of a \lambda \phi^4 + g \phi^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.

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