Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adiabatic regularisation of power spectra in $k$-inflation   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.

25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas