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Weak Field Limit and Gravitational Waves in $f(T,B)$ Teleparallel Gravity
- Source :
- European Physical Journal C: Particles and Fields, Vol 80, Iss 2, Pp 1-11 (2020), European Physical Journal
- Publication Year :
- 2019
- Publisher :
- arXiv, 2019.
-
Abstract
- We derive the gravitational waves for $f\left(T, B\right)$ gravity, an extension of teleparallel gravity containing the torsion scalar $T$ and the boundary term $B$, and demonstrate that it is equivalent to $f(R)$ gravity. Gravitational waves, in this theory, show three polarizations: the two standard, plus and cross, of General Relativity, which are purely transverse, massless tensor polarization modes with two-helicity, and an additional massive scalar mode with zero-helicity. The last one is a mix of a longitudinal mode and a transverse breathing mode. The boundary term $B$ excites the extra scalar polarization and the mass of scalar field breaks the symmetry of the TT gauge by adding a new degree of freedom, namely a single mixed scalar polarization.<br />Comment: 14 pages, accepted for publication in Eur. Phys. J. C
- Subjects :
- High Energy Physics - Theory
Physics
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics and Astronomy (miscellaneous)
General relativity
Gravitational wave
FOS: Physical sciences
lcsh:Astrophysics
General Relativity and Quantum Cosmology (gr-qc)
Polarization (waves)
General Relativity and Quantum Cosmology
Massless particle
Transverse plane
High Energy Physics - Theory (hep-th)
lcsh:QB460-466
lcsh:QC770-798
Weak field
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
Astrophysics - High Energy Astrophysical Phenomena
Field equation
Engineering (miscellaneous)
Scalar field
Mathematical physics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- European Physical Journal C: Particles and Fields, Vol 80, Iss 2, Pp 1-11 (2020), European Physical Journal
- Accession number :
- edsair.doi.dedup.....b9d8420b6cc4d771f40977564c4da67e
- Full Text :
- https://doi.org/10.48550/arxiv.1912.12469