# Siam Physics Congress 2016

8-10 June 2016
Asia/Bangkok timezone

## Starobinsky Model in Rainbow Gravity

Jun 9, 2016, 9:45 AM
15m
Room J1

### Room J1

Oral presentaion Astronomy, Astrophysics and Cosmology

### Speaker

Vicharit Yingcharoenrat

### Description

In this work, we study the Starobinsky's model of inflation in the context of gravity's rainbow theory. We assume that the rainbow function can be written in the power-law form of the Hubble parameter. In addition, we clearly formulate the expressions of the spectral indices, the power spectra, and the tensor-to-scalar ratio associated with both scalar and tensor perturbations and we also compare the results of our model to Planck 2015 data. Finally, it turns out that the values of the number of e-folds $N_k$ and the rainbow parameter λ are constrained to be 42 ≤ $N_k$ ≤ 87 and λ ≤ 6.0 respectively in order to be well consistent with the Planck data up to 2σ C.L..

### Primary authors

Phongpichit Channuie (co-researcher)