Year: 2003
Type: article
Abstract: We study the dynamical evolution of a phase interface or bubble in the context of a $\ensuremath{\lambda}{\ensuremath{\varphi}}^{4}+g{\ensuremath{\varphi}}^{6}$ 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.
Authors: Yoav Bergner, Luís M. A. Bettencourt
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2118320059