Shaft potential inspired warm inflation
Abstract
We discuss the warm inflation in the presence of shaft potential V (ϕ) = Mp4ϕ2n-2 (ϕn+gn)2-2 n, tachyon scalar field and the generalized form of dissipative coefficient Γ = a0 Tq ϕq-1. In this respect, we investigate the inflationary parameters (slow-roll parameters, number of e-folds, scalar-tensor power spectra, spectral indices, tensor-to-scalar ratio and running of scalar spectral index) in both strong and weak dissipative regimes. It is interesting to mention that our inflationary parametric results (tensor-scalar ratio, spectral index and running of spectral) are consistent with the recent observational data such as BICEP2, WMAP9 and latest Planck data.
- Publication:
-
International Journal of Geometric Methods in Modern Physics
- Pub Date:
- 2017
- DOI:
- 10.1142/S0219887817500888
- Bibcode:
- 2017IJGMM..1450088J
- Keywords:
-
- Shaft potential;
- tachyon scalar field;
- inflationary parameters;
- 05.40.+j;
- 98.80.Cq;
- Particle-theory and field-theory models of the early Universe