Issue |
EPL
Volume 147, Number 2, August 2024
|
|
---|---|---|
Article Number | 29001 | |
Number of page(s) | 7 | |
Section | Gravitation, cosmology and astrophysics | |
DOI | https://doi.org/10.1209/0295-5075/ad59bf | |
Published online | 31 July 2024 |
gravity with spacetime torsion
1 School of Physical Sciences, Indian Association for the Cultivation of Science - 2A & 2B Raja S.C. Mullick Road, Kolkata 700 032, India
2 Department of Physics, Visva-Bharati University - Santiniketan 731235, India
3 Labaratory for Theoretical Cosmology, International Centre of Gravity and Cosmos, Tomsk State University of Control Systems and Radioelectronics (TUSUR) - 634050 Tomsk, Russia
Received: 2 May 2024
Accepted: 19 June 2024
The duality between a higher-curvature f(R) gravity model and a scalar-tensor theory helps to bring out the role of the additional degree of freedom originating from the higher-derivative terms in the gravity action. Such a degree of freedom which appears as a scalar field has been shown to have multiple implications in the cosmological/astrophysical scenario. The present work proposes a novel generalization to this correspondence between f(R) gravity and a dual scalar-tensor theory when the affine connection is considered to have an antisymmetric part. It turns out that the f(R) action in the presence of spacetime torsion can be recast to a coupled scalar-tensor theory with a 2-rank massless antisymmetric tensor field in the Einstein frame, where the scalar field gets coupled with the antisymmetric field through derivative coupling(s).
© 2024 EPLA
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