Adiabatic regularisation of power spectra in κ-inflation
Journal article
Alinea, Allan L., Kubota, Takahiro, Nakanishi, Yukari and Naylor, Wade. (2015). Adiabatic regularisation of power spectra in κ-inflation. Journal of Cosmology and Astroparticle Physics. 2015(6), pp. 1-17. https://doi.org/10.1088/1475-7516/2015/06/019
Authors | Alinea, Allan L., Kubota, Takahiro, Nakanishi, Yukari and Naylor, Wade |
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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 |
Year | 2015 |
Journal | Journal of Cosmology and Astroparticle Physics |
Journal citation | 2015 (6), pp. 1-17 |
Publisher | Institute of Physics Publishing |
ISSN | 1475-7516 |
Digital Object Identifier (DOI) | https://doi.org/10.1088/1475-7516/2015/06/019 |
Scopus EID | 2-s2.0-84937932842 |
Page range | 1-17 |
Publisher's version | License All rights reserved File Access Level Controlled |
Output status | Published |
Publication dates | |
Online | 10 Jun 2015 |
Publication process dates | |
Accepted | 25 May 2015 |
Deposited | 27 Jun 2023 |
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https://acuresearchbank.acu.edu.au/item/8z309/adiabatic-regularisation-of-power-spectra-in-inflation
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