False-vacuum decay in time-dependent and two-field models

Details False-vacuum decay in time-dependent and two-field models False-vacuum decay in time-dependent and two-field models

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..44.2306w&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 44, Issue 8, 15 October 1991, pp.2306-2313

Physics

10

Scientific paper

We study the false-vacuum decay of a scalar field making use of the functional Schrödinger equation. The wave function describing the nucleation and expansion of true-vacuum bubbles is derived to O(ħ) and the problem of matching at the classical turning point is discussed. We also study the vacuum decay of a scalar field coupled to a time-dependent external field and derive the traversal time for bubble nucleation. We show that a quasistatic approximation is valid as long as the time scale for the external field to change is long compared to the light-travel time across the bubble. Implications for recently proposed scenarios of first-order inflation are discussed.

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