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Noether Symmetry Analysis Of Anisotropic Universe In F(T;B) Gravity, Yusuf Küçükakça
Noether Symmetry Analysis Of Anisotropic Universe In F(T;B) Gravity, Yusuf Küçükakça
Turkish Journal of Physics
The purpose of the present work was to investigate the Noether symmetries of the locally rotationally symmetric Bianchi type I space time in f(T;B) gravity theory, which depends on the torsion scalar T and the boundary term B. In this theory, we consider some particular models and investigate their Noether symmetry generators. Besides, we get exact cosmological solutions of the considered models including the matter dominant universe using the Noether symmetry technique. The obtained results coincide with the accelerated expansion behavior of the universe.
Nature Of Entropy In A Scalar-Tensor Theory Of Gravity, Onur Siğinç, Mustafa Salti, Hi̇lmi̇ Yanar, Oktay Aydoğdu
Nature Of Entropy In A Scalar-Tensor Theory Of Gravity, Onur Siğinç, Mustafa Salti, Hi̇lmi̇ Yanar, Oktay Aydoğdu
Turkish Journal of Physics
This work is devoted to studying the generalized nature of the entropy function in a specific form of the scalar-tensor-vector (STeVe) theory of gravity for the Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime in the state of thermal equilibrium. For this purpose, we define an equilibrium picture of thermodynamics by making use of a suitable set of the dark energy density and dark pressure descriptions, which defines an energy-momentum tensor obeying the local energy conservation law. Furthermore, we also discuss our results numerically in order to get additional implications.