Warm Inflation in $f(G)$ Theory of Gravity

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.

Note:

22 pages, 8 figures, minor changes

05.40.+j
98.80.Cq
95.36.+x
power spectrum: tensor
inflation
slow-roll approximation
gravitation
Robertson-Walker
field equations
dissipation

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