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Gauge-invariant post-Newtonian perturbations in symmetric teleparallel gravity
- Source :
- Astron. Rep. 65 (2021) 952
- Publication Year :
- 2021
-
Abstract
- We present an extension to the gauge-invariant formulation of the parameterized post-Newtonian (PPN) formalism, which allows its application to symmetric teleparallel gravity theories. In its original formulation, the gauge-invariant PPN formalism makes use of a gauge-invariant perturbative expansion of tensor fields; however, one of the fundamental gravitational field variables in symmetric teleparallel gravity theories is a flat, torsion-free connection, hence not a tensor field. Since connections transform differently from tensor fields under diffeomorphisms, we introduce here an adapted notion of gauge-invariant perturbation variables for the symmetric teleparallel connection, and show how the lowest order terms can be expressed in terms of the common PPN potentials.<br />Comment: Paper presented at the Fourth Zeldovich meeting, an international conference in honor of Ya. B. Zeldovich held in Minsk, Belarus on September 7--11, 2020. Published by the recommendation of the special editors: S. Ya. Kilin, R. Ruffini and G. V. Vereshchagin
- Subjects :
- General Relativity and Quantum Cosmology
Subjects
Details
- Database :
- arXiv
- Journal :
- Astron. Rep. 65 (2021) 952
- Publication Type :
- Report
- Accession number :
- edsarx.2111.06255
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1134/S1063772921100140