Inflationary entanglement

• URL: http://arxiv.org/abs/2212.06448v2
• Date: Fri, 2 Jun 2023 16:39:21 GMT
• Title: Inflationary entanglement
• Authors: Alessio Belfiglio, Orlando Luongo, Stefano Mancini
• Abstract summary: We investigate the entanglement due to geometric corrections in particle creation during inflation. We require particle production to be purely geometric, setting to zero the Bogolubov coefficients and computing the $S$ matrix associated to spacetime perturbations. The corresponding particle density leads to a nonzero entanglement entropy whose effects are investigated at primordial time of Universe evolution.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the entanglement due to geometric corrections in particle creation during inflation. To do so, we propose a single-field inflationary scenario, nonminimally coupled to the scalar curvature of spacetime. We require particle production to be purely geometric, setting to zero the Bogolubov coefficients and computing the $S$ matrix associated to spacetime perturbations, which are traced back to inflaton fluctuations. The corresponding particle density leads to a nonzero entanglement entropy whose effects are investigated at primordial time of Universe evolution. The possibility of modeling our particle candidate in terms of dark matter is discussed. The classical back-reaction of inhomogeneities on the homogeneous dynamical background degrees of freedom is also studied and quantified in the slow-roll regime.

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