The origin of the cosmological constant in unimodular gravity

It is well-known that in unimodular gravity (UG) the cosmological constant is not sourced by a constant energy density, but rather appears as some sort of integration constant. In this work we try to flesh this out by studying in some detail a couple of examples, one from cosmology and the other fro...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 84; no. 3; pp. 287 - 8
Main Authors Álvarez, Enrique, Anero, Jesús, Sánchez-Ruiz, Irene
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 20.03.2024
Springer Nature B.V
SpringerOpen
Subjects
Astronomy
Astrophysics and Cosmology
Cosmological constant
Cosmology
Elementary Particles
Gravitational collapse
Gravity
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
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Summary:It is well-known that in unimodular gravity (UG) the cosmological constant is not sourced by a constant energy density, but rather appears as some sort of integration constant. In this work we try to flesh this out by studying in some detail a couple of examples, one from cosmology and the other from gravitational collapse.
ISSN:1434-6052
1434-6044
1434-6052
DOI:10.1140/epjc/s10052-024-12651-7