Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2015/01/028
Keywords
inflation; quantum cosmology; cosmological perturbation theory
Funding
- Consolider-Ingenio
- John Templeton Foundation
- National Science Foundation [PHYS-1066293]
- JSPS [21244033]
- [MEC FPA2010-20807-C02-02]
- [AGAUR. 2009-SGR-168]
- [MEC FPA2013-46570-C2-2-P]
- [AGAUR 2014-SGR-1474]
- [CPAN CSD2007-00042]
- [ECOST-STSM-MP1210-241113-037164]
- Grants-in-Aid for Scientific Research [26887018] Funding Source: KAKEN
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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 (JET 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.
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