Gravitational waves in f(R) gravity power law model

We investigate the different polarization modes of gravitational waves in f ( R ) gravity power law model in de Sitter space. It is seen that the massive scalar field polarization mode exists in this model. The mass of the scalar field depends highly on the background curvature and the power term n...

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Bibliographic Details
Published inIndian journal of physics Vol. 96; no. 2; pp. 637 - 646
Main Authors Gogoi, Dhruba Jyoti, Dev Goswami, Umananda
Format Journal Article
LanguageEnglish
Published New Delhi Springer India 01.02.2022
Springer Nature B.V
Subjects
Astrophysics and Astroparticles
Gravitational waves
Original Paper
Physics
Physics and Astronomy
Polarization
Power law
Scalars
Tensors
Modified gravity
Power law model
Gravitational waves
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Summary:We investigate the different polarization modes of gravitational waves in f ( R ) gravity power law model in de Sitter space. It is seen that the massive scalar field polarization mode exists in this model. The mass of the scalar field depends highly on the background curvature and the power term n . However, we found that the model does not exhibit a massive scalar mode for n = 2 and instead, it shows a breathing mode in addition to the tensor plus and cross modes. Thus, mass of the scalar field is found to vary with n within the range 1 ≤ n ≤ 2 .
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content type line 14
ISSN:0973-1458
0974-9845
DOI:10.1007/s12648-020-01998-8