Selfconsistent cosmological perturbations from thermal field theory
Abstract
Finitetemperature field theory is used for a selfconsistent and manifestly gaugeinvariant derivation of the effective field equations governing the evolution of adiabatic perturbations of a homogeneous, isotropic cosmological model dominated by an ultrarelativistic plasma of weakly interacting particles in thermal equilibrium. Solutions are obtained in the form of rapidly converging powerseries expansions.
 Publication:

Physical Review Letters
 Pub Date:
 August 1991
 DOI:
 10.1103/PhysRevLett.67.793
 Bibcode:
 1991PhRvL..67..793K
 Keywords:

 Cosmology;
 Field Theory (Physics);
 High Temperature Environments;
 Perturbation Theory;
 Quantum Chromodynamics;
 Self Consistent Fields;
 Adiabatic Conditions;
 Relativistic Plasmas;
 Thermodynamic Equilibrium;
 Weak Interactions (Field Theory);
 Astrophysics;
 98.80.Cq;
 03.70.+k;
 52.60.+h;
 98.60.Eg;
 Particletheory and fieldtheory models of the early Universe;
 Theory of quantized fields