TY - JOUR
T1 - Behavior of chaotic inflation in anisotropic cosmologies with nonminimal coupling
AU - Futamase, Toshifumi
AU - Rothman, Tony
AU - Matzner, Richard
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - We review the behavior of the chaotic inflationary scenario in the minimally coupled anisotropic case and in the nonminimally coupled isotropic case. In the former, anisotropy enhances inflation. In the latter, positive nonminimal coupling introduces a singularity at a critical point c in the scalar field. The exact value of c depends on the coupling parameter 3/4. This singularity cannot be exceeded, which precludes astrophysically sufficient inflation for 3/410-2. We extend the analysis to anisotropic Bianchi models where a second singularity c appears, which further prevents inflation in these models for 3/410-2.
AB - We review the behavior of the chaotic inflationary scenario in the minimally coupled anisotropic case and in the nonminimally coupled isotropic case. In the former, anisotropy enhances inflation. In the latter, positive nonminimal coupling introduces a singularity at a critical point c in the scalar field. The exact value of c depends on the coupling parameter 3/4. This singularity cannot be exceeded, which precludes astrophysically sufficient inflation for 3/410-2. We extend the analysis to anisotropic Bianchi models where a second singularity c appears, which further prevents inflation in these models for 3/410-2.
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U2 - 10.1103/PhysRevD.39.405
DO - 10.1103/PhysRevD.39.405
M3 - Article
AN - SCOPUS:33744700272
VL - 39
SP - 405
EP - 411
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 2
ER -