TY - JOUR
T1 - Cosmic no-hair theorem in power-law inflation
AU - Kitada, Yuichi
AU - Maeda, Kei Ichi
PY - 1992/1/1
Y1 - 1992/1/1
N2 - We prove a cosmic no-hair theorem for Bianchi models in power-law inflation. Provided that the potential of an inflaton is exp(-) with 0<23, we find that the isotropic power-law solution is the unique attractor for any initially expanding Bianchi-type models except type IX. For Bianchi type IX, this conclusion is also true if the initial ratio of the vacuum energy to the maximum three-curvature is larger than one half.
AB - We prove a cosmic no-hair theorem for Bianchi models in power-law inflation. Provided that the potential of an inflaton is exp(-) with 0<23, we find that the isotropic power-law solution is the unique attractor for any initially expanding Bianchi-type models except type IX. For Bianchi type IX, this conclusion is also true if the initial ratio of the vacuum energy to the maximum three-curvature is larger than one half.
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U2 - 10.1103/PhysRevD.45.1416
DO - 10.1103/PhysRevD.45.1416
M3 - Article
AN - SCOPUS:0001528853
SN - 1550-7998
VL - 45
SP - 1416
EP - 1419
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 4
ER -