2023/08/29 by Paliathanasis, A., Dimakis, N., Christodoulakis, T. · 1 citation
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.2308.15207
We investigate the existence of minisuperspace description for the homogeneous cosmological field equations within the framework of symmetric teleparallel f(Q)-gravity. We consider the background space to be described by the isotropic Friedmann--Lema\^ıtre--Robertson--Walker geometry, the anisotropic Kantowski-Sachs and the anisotropic Bianchi III geometries. Across all these models, we establish that the field equations in f(Q)-cosmology exhibit second-order characteristics in the coincident gauge and those of a sixth-order theory in the non-coincident gauge. Specifically, within the latter scenario, the dynamic degrees of freedom are attributed to two scalar fields. Finally, as an example of integrability, we derive a vacuum cosmological solution within the non-coincident gauge.