Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Light Fields During Inflation   In the inflationary universe, there can be light fields other than the
inflaton. We explore a possibility that such light fields source the primordial
perturbations, while minimally affecting the inflaton dynamics. We show that
during inflation, fluctuations of the light fields can be converted to
adiabatic curvature perturbations, which accumulate and become significant by
the end of the inflationary era. An additional goal of this work is to
distinguish between light fields which can/cannot be ignored during inflation.
Such criteria become useful for examining cosmological scenarios with multiple
fields. As concrete examples, our results are applied to D-brane inflation
models. We consider effects from KK modes (oscillation modes) of wrapped branes
in monodromy-driven large-field models, and angular directions of throat
geometries in warped D-brane inflation.

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The categories of this paper are: supr-con
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
19
The categories of this paper are: eess