Gravitational wave in symmetric teleparallel gravity with different connections

We investigate the cosmological perturbations around all three branches of spatially flat universe with different connections in symmetric teleparallel gravity. The model we consider can cover both the case of f(Q) model and that of the non-minimal coupling between a scalar field and the non-metrici...

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Bibliographic Details
Published inPhysics letters. B Vol. 850; p. 138497
Main Authors Rao, Haomin, Liu, Chunhui, Geng, Chao-Qiang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2024
Elsevier
Subjects
Cosmological perturbations
Gravitational wave
Instability
Symmetric teleparallel gravity
Symmetric teleparallel gravity
Instability
Cosmological perturbations
Gravitational wave
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Summary:We investigate the cosmological perturbations around all three branches of spatially flat universe with different connections in symmetric teleparallel gravity. The model we consider can cover both the case of f(Q) model and that of the non-minimal coupling between a scalar field and the non-metricity scalar. We focus on analyzing and comparing the propagation behavior and stability of the tensorial and non-tensorial gravitational waves on spatially flat universe with different connections.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2024.138497