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..48.3914w&link_type=abstract

Physical Review D, Vol. 48, No. 8, p. 3914 - 3917

Physics

Cosmology: Quantum Gravity, Early Universe: Density Perturbations

Scientific paper

The effective action of a quantum field in an inhomogeneous spacetime is studied. The author extends 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. The result is applied to a numerical study of the quantum field effect on the dissipation of the space inhomogeneity in the early universe.

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