Warm inflation in f(G) theory of gravity

Journal Article · Fri Jul 15 00:00:00 EDT 2016 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776116070232· OSTI ID:22617231

Sharif, M., E-mail: [e-mail]; Ikram, A., E-mail: [e-mail] ^[1]

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1. University of the Punjab, Quaid-e-Azam Campus, Department of Mathematics (Pakistan)

The aim of this paper is to explore warm inflation in the background of f(G) theory of gravity using scalar fields for the FRW universe model. We construct the field equations under slow-roll approximations and evaluate the slow-roll parameters, scalar and tensor power spectra and their corresponding spectral indices using viable power-law model. These parameters are evaluated for a constant as well as variable dissipation factor during intermediate and logamediate inflationary epochs. We also find the number of e-folds and tensor- scalar ratio for each case. The graphical behavior of these parameters proves that the isotropic model in f(G) gravity is compatible with observational Planck data.

• OSTI ID: 22617231
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 123, Issue 1; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
COSMOLOGICAL INFLATION
COSMOLOGICAL MODELS
DISSIPATION FACTOR
FIELD EQUATIONS
GENERAL RELATIVITY THEORY
GRAVITATION
INDEXES
RICCI TENSOR
SCALAR FIELDS
SCALARS
SPECTRA
TENSORS
UNIVERSE