Behavior of chaotic inflation in anisotropic cosmologies with nonminimal coupling

Journal Article · Sun Jan 15 04:00:00 EST 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.405· OSTI ID:6553100

Futamase, T; Rothman, T; Matzner, R

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 phi-circumflex/sub c/ in the scalar field. The exact value of phi-circumflex/sub c/ depends on the coupling parameter xi. This singularity cannot be exceeded, which precludes astrophysically sufficient inflation for xiapprox. >10/sup -2/. We extend the analysis to anisotropic Bianchi models where a second singularity phi/sub c/ appears, which further prevents inflation in these models for xiapprox. >10/sup -2/.

• Research Organization: Max-Planck-Institut fuer Astrophysik, Garching bei Munchen, Federal Republic of Germany
• OSTI ID: 6553100
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 39:2; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
645400 -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL MODELS
COUPLING CONSTANTS
ENERGY-MOMENTUM TENSOR
EQUATIONS
FIELD EQUATIONS
GRAVITATIONAL FIELDS
MATHEMATICAL MODELS
POTENTIALS
SCALAR FIELDS
TENSORS
UNIVERSE