Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Systematics of Constant Roll Inflation   We study constant roll inflation systematically. This is a regime, in which
the slow roll approximation can be violated. It has long been thought that this
approximation is necessary for agreement with observations. However, recently
it was understood that there can be inflationary models with a constant, and
not necessarily small, rate of roll that are both stable and compatible with
the observational constraint $n_s \approx 1$. We investigate systematically the
condition for such a constant-roll regime. In the process, we find a whole new
class of inflationary models, in addition to the known solutions. We show that
the new models are stable under scalar perturbations. Finally, we find a part
of their parameter space, in which they produce a nearly scale-invariant scalar
power spectrum, as needed for observational viability.

35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat