Dynamical features of scalar-torsion theories
Maria Skugoreva, Emmanuel Saridakis, Alexey Toporensky
TL;DR
This paper explores the cosmological dynamics of scalar-torsion theories in teleparallel gravity, revealing unique stability properties and oscillatory behaviors not present in scalar-curvature models.
Contribution
It provides analytical asymptotic solutions and numerical phase-space analysis, highlighting key differences from nonminimal scalar-curvature theories.
Findings
Rare stability in scalar-torsion cosmologies
Frequent oscillatory behaviors observed
Distinct phase-space dynamics compared to scalar-curvature theories
Abstract
We investigate the cosmological dynamics in teleparallel gravity with nonminimal coupling. We analytically extract several asymptotic solutions and we numerically study the exact phase-space behavior. Comparing the obtained results with the corresponding behavior of nonminimal scalar-curvature theory, we find significant differences, such is the rare stability and the frequent presence of oscillatory behavior.
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