English

Anisotropic spacetimes in $f(T,B)$ theory IV: Noether symmetry analysis

General Relativity and Quantum Cosmology 2022-07-19 v1 Cosmology and Nongalactic Astrophysics Mathematical Physics math.MP

Abstract

The Noether symmetry analysis is applied for the analysis of the field equations in an anisotropic background in f(T,B)f(T,B)-theory. We consider the f(T,B)=T+F(B)f\left( T,B\right) =T+F\left( B\right) which describes a small deviation from TEGR introduced by the boundary scalar BB. For the Bianchi\ I, Bianchi III and Kantowski-Sachs geometries there exists a minisuperspace description and Noether's theorems are applied. We investigate the existence of invariant point transformations. We find that for the Bianchi I spacetime the gravitational field equations are Liouville integrable for the F(B)=BλlnBF\left( B\right) =-\frac{B}{\lambda}\ln B theory. The analytic solution is derived and the application of Noether symmetries to the Wheeler-DeWitt equation of quantum cosmology is discussed.

Keywords

Cite

@article{arxiv.2207.08575,
  title  = {Anisotropic spacetimes in $f(T,B)$ theory IV: Noether symmetry analysis},
  author = {Andronikos Paliathanasis},
  journal= {arXiv preprint arXiv:2207.08575},
  year   = {2022}
}

Comments

14 pages, no figures