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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-10-31 12:31 |
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Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Theoretical Physics and Applied Mathematics
Title:
Dynamics of a new quintom dark energy model non-minimally coupled with the scalar torsion and a boundary term in the teleparallel equivalent of general relativity
Authors:
Sebastian BAHAMONDE(1), Mihai MARCIU(2), and Prabir RUDRA(3)
*
Affiliation:
1)Department of Mathematics, University College London, Gower Street, London, WC1E 6BT, United Kingdom
2)Faculty of Physics, University of Bucharest, 405 Atomistilor, POB MG-11, RO-077125 Bucharest-Magurele, Roumania
3) Department of Mathematics, Asutosh College, Kolkata-700026, India
E-mail
mihaimarciu@gmail.com
Keywords:
dark energy
Abstract:
In this work we shall propose a new quintom scenario constructed in the teleparallel equivalent of general relativity, considering that the scalar quintom fields in our action are non-minimally coupled with the scalar torsion and the boundary term, respectively. By performing a phase space analysis, we shall investigate the basic properties of our model and the effects of the non-minimal coupling coefficients for the dynamics of the Universe. Analyzing the evolution of the dark energy equation of state, we have observed that our model can exhibit phantom divide line crossing, offering a possible solution to the crossing of the cosmological constant boundary, as suggested by recent observations. Various theoretical aspects from this presentation are based on our new work in reference [1].
References:
[1] “Generalised teleparallel quintom dark energy non-minimally coupled with the scalar torsion and a boundary term”, S. Bahamonde et. al., JCAP 04 (2018) 056.
Acknowledgement:
P.R. acknowledges University Grants Commission, Govt. of India
for providing research project grant (No. F.PSW-061/15-16 (ERO)). P.R. also acknowledges Inter University Centre for Astronomy and Astrophysics (IUCAA), Pune, India, for awarding Visiting Associateship.
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