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Dissipative effects during the oscillations around a true vacuum

Dissipative effects during the oscillations around a true vacuum Using functional techniques (the closed-time-path formalism) we derive a systematic way of computing the dynamical operator for the fluctuations of the mean value around a stable configuration. The equations are real and causal and contain some dissipative terms. We examine the effects predicted by them for a λ Φ 4 theory in the one- and two-loop approximations. We estimate the time needed for the damping of the oscillations around a zero and a nonzero mean value (the dominant processes are different in these two cases). We discuss some conceptual issues about the nature of this dissipative process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Dissipative effects during the oscillations around a true vacuum

Physical Review D , Volume 42 (2) – Jul 15, 1990
14 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1990 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.42.529
Publisher site
See Article on Publisher Site

Abstract

Using functional techniques (the closed-time-path formalism) we derive a systematic way of computing the dynamical operator for the fluctuations of the mean value around a stable configuration. The equations are real and causal and contain some dissipative terms. We examine the effects predicted by them for a λ Φ 4 theory in the one- and two-loop approximations. We estimate the time needed for the damping of the oscillations around a zero and a nonzero mean value (the dominant processes are different in these two cases). We discuss some conceptual issues about the nature of this dissipative process.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 15, 1990

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