TY - JOUR
T1 - A step beyond the bounce
T2 - Bubble dynamics in quantum phase transitions
AU - Bergner, Yoav
AU - Bettencourt, Luís M.A.
PY - 2003
Y1 - 2003
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevD.68.025014
DO - 10.1103/PhysRevD.68.025014
M3 - Article
AN - SCOPUS:0042838357
VL - 68
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 2
M1 - 025014
ER -