The quantum theory of gauge-invariant cosmological perturbations

Details The quantum theory of gauge-invariant cosmological perturbations The quantum theory of gauge-invariant cosmological perturbations

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988zhetf..94....1m&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 94, July 1988, p. 1-11. In Russian.

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Cosmology, Gauge Invariance, Metric Space, Perturbation Theory, Quantum Theory, Computational Astrophysics, Evolution (Development), Field Theory (Physics), Isotropic Media, Numerical Stability

Scientific paper

Longitudinal-type perturbations in an isotropic universe filled with a scalar field are considered. The action for the perturbations is expressed through a gauge-invariant variable completely characterizing the perturbations. A consistent theory for these perturbations is developed and the inhomogeneity spectrum in inflationary models for the evolution of the universe is calculated.

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