Dynamical features of scalar-torsion theories

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 theo...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2015-12, Vol.91 (4), Article 044023
Main Authors: Skugoreva, Maria A., Saridakis, Emmanuel N., Toporensky, Alexey V.
Format: Article
Language:English
Subjects:
Asymptotic properties
Cosmology
Dynamic tests
Gravitation
Joining
Mathematical analysis
Mathematical models
Stability
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Summary: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 as the rare stability and the frequent presence of oscillatory behavior.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.91.044023