Modified Friedmann equations from Maxwell-Weyl gauge theory

This study investigates the possibility of a homogeneous and isotropic cosmological solution within the context of the Maxwell-Weyl gauge theory of gravity. To achieve this, we utilize the Einstein-Yang-Mills theory as an analogy and represent the Maxwell gauge field in terms of two time-dependent s...

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Bibliographic Details
Published inNuclear physics. B Vol. 1006; p. 116634
Main Author Kibaroğlu, Salih
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2024
Elsevier
Subjects
Cosmology
Dark energy
Gauge field theory
Lie algebra
Cosmology
Dark energy
Lie algebra
Gauge field theory
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Summary:This study investigates the possibility of a homogeneous and isotropic cosmological solution within the context of the Maxwell-Weyl gauge theory of gravity. To achieve this, we utilize the Einstein-Yang-Mills theory as an analogy and represent the Maxwell gauge field in terms of two time-dependent scalar fields. We derive the modified Friedmann equations, integrating the contributions from the Maxwell gauge fields and an effective cosmological constant that depends on the Dirac scalar field. Our analysis reveals how these modifications influence various cosmological scenarios, including power-law evolution, de Sitter-like expansion, inflationary phases, non-singular bounce cosmologies, and cyclic cosmologies.
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2024.116634