Effective action of a scalar field in a curved spacetime with a small inhomogeneity

Details Effective action of a scalar field in a curved spacetime with a small inhomogeneity Effective action of a scalar field in a curved spacetime with a small inhomogeneity

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvd..48.3914h&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 48, Issue 8, 15 October 1993, pp.3914-3917

Physics

4

Theory Of Quantized Fields

Scientific paper

The effective action of a quantum field in an inhomogeneous spacetime is studied. We extend the Hartle-Hu method, which was developed to investigate the model in a homogeneous spacetime with a small anisotropy, to evaluate the one-loop effective action for a scalar field in a curved spacetime with a small inhomogeneity. Through a rather lengthy calculation we obtain the final expression which is then applied to numerically investigate the quantum-field effect on the dissipation of the space inhomogeneity in the early Universe.

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