Year: 2013
Type: article
Abstract: We present a general polynomial chaotic inflation model in supergravity, for which the predicted spectral index and tensor-to-scalar ratio can lie within the 1σ region allowed by the Planck results. Most importantly, the predicted tensor-to-scalar ratio is large enough to be probed in the on-going and future B-mode experiments. We study the inflaton dynamics and the subsequent reheating process in a couple of specific examples. The non-thermal gravitino production from the inflaton decay can be suppressed in a case with a discrete Z 2 symmetry. We find that the reheating temperature can be naturally as high as O (10 9−10 ) GeV, sufficient for baryon asymmetry generation through (non-)thermal leptogenesis.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: research on cosmological nonlinear and non-perturbative gravitational phenomena, G1701892308, G281656809, The exploration of extradimensions in terms of a variety of cosmophysical phenomena caused by axionic moduli, G3439538557, G3988090857, G4474452502, Evolution of the early Universe based on the results of Planck and LHC, G5473262123, G6113636417, G6126871162, G7874054138, New particle physics models and cosmological scenarios based on the LHC experiments
OpenAlex ID: W2025698392