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Adiabatic regularisation of power spectra in κ-inflation
Alinea, Allan L. Kubota, Takahiro Nakanishi, Yukari Naylor, Wade
Alinea, Allan L.
Kubota, Takahiro
Nakanishi, Yukari
Naylor, Wade
Abstract
We look at the question posed by Parker et al. about the effect of UV regularisation on the power spectrum for inflation. Focusing on the slow-roll k-inflation, we show that up to second order in the Hubble and sound flow parameters, the adiabatic regularisation of such model leads to no difference in the power spectrum apart from certain cases that violate near scale-invariant power spectra. Furthermore, extending to non-minimal k-inflation, we establish the equivalence of the subtraction terms in the adiabatic regularisation of the power spectrum in Jordan and Einstein frames.
Keywords
inflation, quantum field theory on curved space, CMBR theory
Date
2015
Type
Journal article
Journal
Journal of Cosmology and Astroparticle Physics
Book
Volume
2015
Issue
6
Page Range
1-17
Article Number
ACU Department
School of Education
Faculty of Education and Arts
Faculty of Education and Arts
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Relation URI
Source URL
Event URL
Open Access Status
License
All rights reserved
File Access
Controlled