Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\alpha$-vacuum and inflationary bispectrum   In this paper, we discuss the non-Guassianity originated from the
$\alpha$-vacuum on the CMB anisotropy. For $\alpha$-vacuum, there exist
correlation between points in the acausal two patches of de Sitter spactime.
Such kind of correlation can lead to large local form non-Guassianity in
$\alpha$-vacuum. For the single field slow-roll inflationary scenario, the
spacetime is in a quasi-de Sitter phase during the inflation. We will show that
the $\alpha$-vacuum in this case will lead to non-Gaussianity with
distinguished feature, of a large local form and a very different shape.

17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th