The quantum theory of gaugeinvariant cosmological perturbations
Abstract
Longitudinaltype perturbations in an isotropic universe filled with a scalar field are considered. The action for the perturbations is expressed through a gaugeinvariant 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.
 Publication:

Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki
 Pub Date:
 July 1988
 Bibcode:
 1988ZhETF..94....1M
 Keywords:

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