Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generating curvature perturbations with or without MSSM flat directions   We consider instant preheating as the mechanism for generating the curvature
perturbation at the end of chaotic inflation. Then we examine if inflation
could be driven by a Minimal Supersymmetric Standard Model (MSSM) flat
direction or a sneutrino. Our simple mechanism relaxes some serious constraints
that appeared in past studies, making inflation driven by a MSSM flat direction
or a sneutrino more plausible.

5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex