Tachyon inflation in the holographic braneworld
Abstract
A model of tachyon inflation is proposed in the framework of holographic cosmology. The model is based on a holographic braneworld scenario with a D3-brane located at the holographic boundary of an asymptotic ADS bulk. The tachyon field that drives inflation is represented by a DBI action on the brane. We solve the evolution equations analytically in the slow-roll regime and solve the exact equations numerically. We calculate the inflation parameters and compare the results with Planck 2018 data.
Cite
@article{arxiv.1809.07216,
title = {Tachyon inflation in the holographic braneworld},
author = {Neven Bilic and Dragoljub D. Dimitrijevic and Goran S. Djordjevic and Milan Milosevic and Marko Stojanovic},
journal= {arXiv preprint arXiv:1809.07216},
year = {2019}
}
Comments
27 pages 6 figures, substantially revised version accepted for publication in JCAP. A comment on primordial non-Gaussianity added, an appendix on cosmological perturbations added, a minor mistake in the equation for spectral density corrected resulting in slight modifications of the plots, 7 references added, typos corrected