Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new method for calculating the primordial bispectrum in the squeezed
  limit   In 2004, Creminelli and Zaldarriaga proposed a consistency relation for the
primordial curvature perturbation of all single-field inflation models; it
related the bispectrum in the squeezed limit to the spectral tilt. We have
developed a technique, based in part on the Creminelli and Zaldarriaga
argument, that can greatly simplify the calculation of the squeezed-limit
bispectrum using the in-in formalism; we were able to arrive at a generic
formula that does not rely on a slow-roll approximation. Using our formula, we
explicitly tested the consistency relation for power-law inflation and for an
exactly scale-invariant model by Starobinsky; for the latter model, Creminelli
and Zaldarriaga's argument predicts a vanishing bispectrum whereas our quantum
calculation shows a non-zero bispectrum that approaches zero in the
long-wavelength limit and for inflation with a large number of e-folds.

1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg