English

Kantowski-Sachs and Bianchi III dynamics in $f\left(Q\right)$-gravity

General Relativity and Quantum Cosmology 2024-03-12 v1 High Energy Physics - Phenomenology Mathematical Physics math.MP

Abstract

We explore the phase-space of homogeneous and anisotropic spacetimes within symmetric teleparallel f(Q)f(Q)-gravity. Specifically, we consider the Kantowski-Sachs and locally rotational Bianchi III geometries to describe the physical space. By analyzing the phase-space, we reconstruct the cosmological history dictated by f(Q)f(Q)-gravity and comment about the theory's viability. Our findings suggest that the free parameters of the connection must be constrained to eliminate nonlinear terms in the field equations. Consequently, new stationary points emerge, rendering the theory cosmologically viable. We identify the existence of anisotropic accelerated universes, which may correspond to the pre-inflationary epoch.

Keywords

Cite

@article{arxiv.2403.06922,
  title  = {Kantowski-Sachs and Bianchi III dynamics in $f\left(Q\right)$-gravity},
  author = {Alfredo D. Millano and K. Dialektopoulos and N. Dimakis and A. Giacomini and H. Shababi and Amlan Halder and A. Paliathanasis},
  journal= {arXiv preprint arXiv:2403.06922},
  year   = {2024}
}

Comments

23 pages, 2 compound figures