Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological Consequences of Initial State Entanglement   We explore the cosmological consequences of having the fluctuations of the
inflaton field entangled with those of another scalar, within the context of a
toy model consisting of non-interacting, minimally coupled scalars in a fixed
de Sitter background. We find that despite the lack of interactions in the
Lagrangian, the initial state entanglement modifies the mode equation for the
inflaton fluctuations and thus can induce changes in cosmological observables.
These effects are examined for a variety of choices of masses and we find that
they can be consistent with the requirement that the back reaction of the
modified state not affect the inflationary phase while still giving rise to
observable effects in the power spectrum. Our results suggest that more
realistic extensions of the ideas explored here beyond the simple toy model may
lead to interesting observable effects.

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The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math