INVESTIGADORES
CALZETTA Esteban Adolfo
artículos
Título:
Dissipation of quantum fields from particle creation
Autor/es:
ESTEBAN CALZETTA; BEI-LOK HU
Revista:
PHYSICAL REVIEW D - PARTICLE AND FILDS
Editorial:
APS
Referencias:
Lugar: Ridge; Año: 1989 vol. 40 p. 656 - 659
ISSN:
0556-2821
Resumen:
We discuss the nature and origin of the dissipation of quantum fields
due to the back reaction of particle creation. We derive the effective
action of a scalar gφ3
theory in the closed-time-path-integral formalism. From the real and
causal equation of motion for the background field we deduce a
dissipative function for this process and for the cosmological
anisotropy damping problem studied earlier. This model illustrates that
the appearance of dissipative behavior from the back reaction of
particle creation in quantum fields is a general feature. It also
suggests that the role of gravity in the display of dissipative behavior
in semiclassical processes is not unique.