Inflationary entanglement

被引：18

作者：

Belfiglio, Alessio ^{[1
,2
]}

Luongo, Orlando ^{[1
,2
,3
]}

Mancini, Stefano ^{[1
,2
]}

机构：

[1] Univ Camerino, Sch Sci & Technol, Via Madonna Carceri, I-62032 Camerino, Italy

[2] Ist Nazl Fis Nucl INFN, Sez Perugia, I-06123 Perugia, Italy

[3] Al Farabi Kazakh Natl Univ, Inst Expt & Theoret Phys, Alma Ata 050040, Kazakhstan

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 10期

关键词：

QUANTUM FIELD-THEORY; PARTICLE CREATION; DARK ENERGY; COSMOLOGICAL CONSTANT; APPROXIMATION SCHEME; UNIVERSE; FLUCTUATIONS; DECAY; RENORMALIZATION; DYNAMICS;

D O I：

10.1103/PhysRevD.107.103512

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 Bogoliubov coefficients and computing the S matrix associated with 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 backreaction of inhomogeneities on the homogeneous dynamical background degrees of freedom is also studied and quantified in the slow-roll regime.

引用

页数：16

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