Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new branch of inflationary speed limits   We present a new mechanism for inflation which exhibits a speed limit on
scalar motion, generating accelerated expansion even on a steep potential. This
arises from explicitly integrating out the short modes of additional fields
coupled to the inflaton $\phi$ via a dimension six operator, yielding an
expression for the effective action which includes a nontrivial (logarithmic)
function of $(\partial\phi)^2$. The speed limit appears at the branch cut of
this logarithm arising in a large flavor expansion, similarly to the square
root branch cut in DBI inflation arising in a large color expansion. Finally,
we describe observational constraints on the parameters of this model.

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The categories of this paper are: gr-qc
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin