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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:38 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Theoretical and Computational Physics, High-Energy Physics, Applied Mathematics
Title:
Cubic gravity theory based on third order contractions of the Riemann tensor-Observational constraints
Authors:
Mihai DRAGOMIR (1), Mihai MARCIU (1), Dana Maria IOAN (1), Virgil BARAN (1), Roxana ZUS (1)
Affiliation:
Faculty of Physics, University of Bucharest
E-mail
mihai.dragomir@s.unibuc.ro
Keywords:
Gravity, Cosmology, General Relativity
Abstract:
The paper [1] studies different observational features in the case of a specific cubic gravity theory, based on third order contractions of the Riemann tensor. Considering viable cosmic chronometers data, baryon acoustic oscillations, and supernovae, we analyze the viability of such a theoretical model, obtaining specific constraints for different parameters in the current scenario. It is shown that the present extension of the ΛCDM cosmological model is compatible with recent data sets. The results indicate that the dark energy equation of state is exhibiting a phantom regime in the near past in the case of the best fitted values, a behavior which is in agreement with various phenomenological studies.
References:
[1] Marciu, M., Ioan, D.M., Dragomir, M. Observational constraints for cubic gravity theory based on third order contractions of the Riemann tensor. Eur. Phys. J. C 84, 196 (2024).
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