Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong scale dependent bispectrum in the Starobinsky model of inflation   We compute analytically the dominant contribution to the tree-level
bispectrum in the Starobinsky model of inflation. In this model, the potential
is vacuum energy dominated but contains a subdominant linear term which changes
the slope abruptly at a point. We show that on large scales compared with the
transition scale $k_0$ and in the equilateral limit the analogue of the
non-linearity parameter scales as $(k/k_0)^2$, that is its amplitude decays for
larger and larger scales until it becomes subdominant with respect to the usual
slow-roll suppressed corrections. On small scales we show that the
non-linearity parameter oscillates with angular frequency given by $3/k_0$ and
its amplitude grows linearly towards smaller scales and can be large depending
on the model parameters. We also compare our results with previous results in
the literature.

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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
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The categories of this paper are: stat
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th