Open AccessSTABILITY OF FRIEDMANN-ROBERTSON-WALKER UNIVERSE FILLED WITH MATTER
Author(s) -
Ruihua Zhao,
Lichun Zhang
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.1644
Subject(s) - physics , universe , de sitter universe , friedmann equations , cosmological constant , flatness problem , big rip , scale factor (cosmology) , perturbation (astronomy) , friedmann–lemaître–robertson–walker metric , mathematical physics , metric expansion of space , zero energy universe , particle horizon , astrophysics , cosmology , steady state theory , astronomy , dark energy
The stability of the universe filled with matter,which satisfies P=(γ-1)ρ,is investigated in Friedmann-Robertson-Walker the universe model containing a cosmological constant.The universe satisfying Einstein field equation is obtained for ε=-1 and Λ<0.When γ≥0,the universe is shown to be unstable by calculating the perturbation of gravitational wave and using the relation dP/dρ=γ-1.