Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model - INSPIRE

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Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model

Parviz Goodarzi
(
- U. Ayatollah Ozma Borujerdi
)
,
H. Mohseni Sadjadi
(
- Tehran U.
)

Sep 18, 2016

21 pages

Published in:

Eur.Phys.J.C 77 (2017) 7, 463

Published: Jul 12, 2017

e-Print:

1609.06185 [gr-qc]

DOI:

10.1140/epjc/s10052-017-5028-x

View in:

ADS Abstract Service

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Abstract: (arXiv)

In the cold inflation scenario, the slow roll inflation and reheating via coherent rapid oscillation, are usually considered as two distinct eras. When the slow roll ends, a rapid oscillation phase begins and the inflaton decays to relativistic particles reheating the Universe. In another model dubbed warm inflation, the rapid oscillation phase is suppressed, and we are left with only a slow roll period during which the reheating occurs. Instead, in this paper, we propose a new picture for inflation in which the slow roll era is suppressed and only the rapid oscillation phase exists. Radiation generation during this era is taken into account, so we have warm inflation with an oscillatory inflaton. To provide enough e-folds, we employ the non-minimal derivative coupling model. We study the cosmological perturbations and compute the temperature at the end of warm oscillatory inflation.

Note:

22 pages, typos fixed, accepted by EPJC

inflation: model
fluctuation: thermal
coupling: derivative
coupling: kinetic
nonminimal
inflaton
field theory: scalar
power spectrum: primordial
power spectrum: scalar
perturbation: scalar

References(75)

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