Multi-field inflation from holography
High Energy Physics - Theory
2015-06-23 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
We initiate the study of multi-field inflation using holography. Bulk light scalar fields correspond to nearly marginal operators in the boundary theory and the dual quantum field theory is a deformation of a CFT by such operators. We compute the power spectra of adiabatic and entropy perturbations in a simple model and find that the adiabatic curvature perturbation is not conserved in the presence of entropy perturbations but becomes conserved when the entropy perturbations are set to zero or the model is effectively a single scalar model, in agreement with expectations from cosmological perturbation theory.
Cite
@article{arxiv.1410.3290,
title = {Multi-field inflation from holography},
author = {Jaume Garriga and Kostas Skenderis and Yuko Urakawa},
journal= {arXiv preprint arXiv:1410.3290},
year = {2015}
}
Comments
26 pages, 1 figure