Minimal warm inflation
Minimal warm inflation
复制标题
最小的暖通胀
DOI:
10.1088/1475-7516/2020/03/034
复制
发表时间:
2020
影响因子:
6.4
通讯作者:
Kaplan, David E.
中科院分区:
文献类型:
--
作者:
Berghaus, Kim V.;Graham, Peter W.;Kaplan, David E.
Slow-roll inflation is a successful paradigm. However we find that even a small coupling of the inflaton to other light fields can dramatically alter the dynamics and predictions of inflation. As an example, the inflaton can generically have an axion-like coupling to gauge bosons. Even relatively small couplings will automatically induce a thermal bath during inflation. The thermal friction from this bath can easily be stronger than Hubble friction, significantly altering the usual predictions of any particular inflaton potential. Thermal effects suppress the tensor-to-scalar ratio r significantly, and predict unique non-gaussianities. This axion-like coupling provides a minimal model of warm inflation which avoids the usual problem of thermal backreaction on the inflaton potential. As a specific example, we find that hybrid inflation with this axion-like coupling can easily fit the current cosmological data.
登录
查看更多内容
影响因子:
4.4
作者:
H. Mishra;S. Mohanty;A. Nautiyal
通讯作者:
A. Nautiyal
DOI:
10.1142/9789811202339_0064
发表时间:
2018
期刊:
Particle Physics at the Silver Jubilee of Lomonosov Conferences
影响因子:
--
作者:
R. Rangarajan
通讯作者:
R. Rangarajan
影响因子:
5
作者:
P. Graf;F. Steffen
通讯作者:
P. Graf;F. Steffen
影响因子:
6.5
作者:
Ade, P. A. R.;Aghanim, N.;Zonca, A.
通讯作者:
Zonca, A.
影响因子:
5
作者:
V. Kamali
通讯作者:
V. Kamali