http://arxiv.org/abs/1706.05489
We have investigated the attractor structure for the CMB fluctuations in composite inflation scenario within the gauged Nambu-Jona-Lasinio (NJL) model. Such composite inflation represents an attractor which can not be found in a fundamental scalar model. As is known, the number of inflationary models contains the attractor classified by the $\alpha$-attractor model. It is found that the attractor inflation in the gauged NJL model corresponds to the $\alpha = 2$ case.
T. Inagaki, S. Odintsov and H. Sakamoto
Tue, 20 Jun 17
57/72
Comments: 7 pages, 2 figures