Unimodular Approaches to the Cosmological Constant Problem

We review selected aspects of unimodular gravity and we discuss its viability as a solution of the old cosmological constant problem. In unimodular gravity, the cosmological constant is promoted to a global degree of freedom. We highlight the importance of correctly setting up its initial data in or...

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Bibliographic Details
Main Author: Pavel Jiroušek
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Universe
Subjects:
Online Access:https://www.mdpi.com/2218-1997/9/3/131