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Non perturbative spherical gravitational waves
- Source :
- PLB, V816, 136220 (2021)
- Publication Year :
- 2021
-
Abstract
- It is well-known that there is no spherical/topologically spherical gravitational waves in vacuum space in general relativity. We show that a deviation from general relativity leads to exact vacuum spherical gravitational waves, no matter how tiny this deviation is. We also discuss the related topics, including Vaidya-like metric in $f(R)$ gravity. We demonstrate that the existence of spherical gravitational wave is a non perturbative property for gravities. We investigate energy carried by this nonperturbative wave. We first find the wave solution from investigations of Vaidya-like metric in $f(R)$ gravity, which has only one longitude polarization. We further extend it to a metric with two transverse polarizations by directly solving the field equation.<br />Comment: 11 pages; references added
- Subjects :
- General Relativity and Quantum Cosmology
High Energy Physics - Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- PLB, V816, 136220 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2103.14553
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.physletb.2021.136220