Effects of a Quantum or Classical Scalar Field on the Entanglement Entropy of a Pair of Universes

Autor:	Bellido, Samuel Barroso
Rok vydání:	2021
Předmět:	General Relativity and Quantum Cosmology
Zdroj:	Phys. Rev. D 104, 106009 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.104.106009
Popis:	Using the formalism of the third quantization in canonical quantum gravity, the entropy of entanglement of a pair of universes created in the multiverse from the vacuum has lately been calculated. Here, we examine the differences between considering a scalar field as quantum or classical on the entanglement entropy of three different pairs: de-Sitter universes, flat stiff matter dominated universes, and closed universes with a scalar field. We find that the entanglement entropy is unchanged, zero, or dependent on the treatment of the scalar field, respectively. Comment: Accepted for publication in PRD. 3 Figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2110.14736 Zobrazit plný text záznamu View this record from Arxiv