Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Oscillatory features in the curvature power spectrum after a sudden turn
  of the inflationary trajectory   In the context of two-field inflation characterized by a light direction and
a heavy direction, we revisit the question of the impact of the massive modes
on the power spectrum produced after a turn in the inflationary trajectory. We
consider in particular the resonant effect due to the background oscillations
following a sharp turn. Working in the mass basis, i.e. in the basis spanned by
the eigenvectors of the effective mass matrix for the perturbations, we provide
an analytical estimate of the resonant effect, using the in-in formalism. In
comparison with earlier estimates, we find the same the spectral dependence but
a smaller amplitude. We also compute, again via the in-in formalism, the effect
of the direct coupling between the light and heavy modes at the instant of the
turn and confirm our previous results obtained via a different method.

11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph