Open AccessValidity of the ‘conservation law’ in the evolution of cosmological perturbations
Author(s) -
Götz Martin
Publication year - 1998
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1998.01290.x
Subject(s) - physics , cosmology , conservation law , theoretical physics , metric (unit) , inflation (cosmology) , criticism , cosmological model , classical mechanics , astrophysics , law , quantum mechanics , economics , operations management , political science
It is shown that the ‘conservation law’ for metric fluctuations with long wavelengths is indeed applicable for growing modes of perturbations, which are of interest in cosmology, in spite of recent criticism. This is demonstrated both by general arguments and by presenting an explicitly solvable toy model for the evolution of metric perturbations during inflation.