Anisotropic inflation with derivative couplings
Anisotropic inflation with derivative couplings
复制标题
具有导数耦合的各向异性膨胀
DOI:
10.1103/physrevd.97.103534
复制
发表时间:
2018
影响因子:
5
通讯作者:
Holland J
中科院分区:
文献类型:
--
作者:
Holland J
We study anisotropic power-law inflationary solutions when the inflaton and its derivative couple to a vector field. This type of coupling is motivated by D-brane inflationary models, in which the inflaton, and a vector field living on the D-brane, couple disformally (derivatively). We start by studying a phenomenological model where we show the existence of anisotropic solutions and demonstrate their stability via a dynamical system analysis. Compared to the case without a derivative coupling, the anisotropy is reduced and thus can be made consistent with current limits, while the value of the slow-roll parameter remains almost unchanged. We also discuss solutions for more general cases, including D-brane–like couplings.
登录
查看更多内容
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
R. Emami
通讯作者:
R. Emami
影响因子:
6.4
作者:
T. Koivisto;F. Urban
通讯作者:
T. Koivisto;F. Urban
影响因子:
8.6
作者:
Masa-aki Watanabe;S. Kanno;J. Soda
通讯作者:
Masa-aki Watanabe;S. Kanno;J. Soda
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Avgoustidis;I. Zavala
通讯作者:
I. Zavala
影响因子:
2.8
作者:
Dimopoulos K
通讯作者:
Dimopoulos K