Seeding the vacuum with entropy: the Chaplygin-like vacuum hypothesis

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Bertolami, O (Author) FCUP

Journal

Title: Classical and Quantum Gravity

Vol. 40

ISSN: 0264-9381

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00Y-S0N

DOI: 10.1088/1361-6382/aceacb

Abstract (EN): It is proposed that the vacuum admits two different phases as described by the Chaplygin equation of state or its generalised version: a phase where the energy density behaves as if dominated by non-relativistic matter and a de Sitter phase. The particle production due to the expansion that takes place at the matter-like phase can generate entanglement entropy and provide, through interactions, the environment that turn gravitational quantum features into classical ones. In the ensued de Sitter phase, the cosmological constant can be suppressed by inflation.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9