Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmological implications of interacting Group Field Theory models:
  cyclic Universe and accelerated expansion   We study the cosmological implications of interactions between spacetime
quanta in the Group Field Theory (GFT) approach to Quantum Gravity from a
phenomenological perspective. Our work represents a first step towards
understanding Early Universe Cosmology by studying the dynamics of the emergent
continuum spacetime, as obtained from a fundamentally discrete microscopic
theory. In particular, we show how GFT interactions lead to a recollapse of the
Universe while preserving the bounce replacing the initial singularity, which
has already been shown to occur in the free case. It is remarkable that cyclic
cosmologies are thus obtained in this framework without any a priori assumption
on the geometry of spatial sections of the emergent spacetime. Furthermore, we
show how interactions make it possible to have an early epoch of accelerated
expansion, which can be made to last for an arbitrarily large number of
e-folds, without the need to introduce an ad hoc potential for the scalar
field.

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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: solv-int