Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of perturbation after multi-field inflation   We explore a new possibility that some inflaton fields in multi-field
inflation models satisfy the observed value of the spectral index so that the
curvature perturbation generated by them through post-inflationary dynamics may
be relevant for the current observations. We illustrate this point using a
simple and reasonable multi-field chaotic inflation model motivated from string
theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly
addressed.

20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn