Tensor-to-scalar ratio in Eddington-inspired Born–Infeld inflation

The European Physical Journal C

Inyong Cho¹  Naveen K. Singh¹ 

[1] Institute of Convergence Fundamental Studies and School of Liberal Arts, Seoul National University of Science and Technology, 139-743, Seoul, Korea;

关键词: Scalar Perturbation;    Perturbation Field;    Tensor Perturbation;    Massive Scalar Field;    Attractor Stage;   

DOI  :  10.1140/epjc/s10052-014-3155-1

来源: Springer

【 摘 要 】

We investigate the scalar perturbation of the inflation model driven by a massive scalar field in Eddington-inspired Born–Infeld gravity. We focus on the perturbation at the attractor stage in which the first and the second slow-roll conditions are satisfied. The scalar perturbation exhibits the corrections to the chaotic inflation model in general relativity. We find that the tensor-to-scalar ratio becomes smaller than that of the usual chaotic inflation.

【 授权许可】

CC BY