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7–11 Dec 2020
Palais des Papes, Avignon
Europe/Paris timezone

Anisotropic cosmological models under f(R;T ) theory of gravity

11 Dec 2020, 09:00
20m
Chambre du Trésorier (Palais des Papes, Avignon)

Chambre du Trésorier

Palais des Papes, Avignon

Speaker

Bivudutta Mishra (BITS-Pilani, Hyderabad Campus)

Description

In the present work, we have presented and analyzed the cosmological models of the universe with an anisotropic variable parameter. We have set up the ?field equations with the space time in the form of Bianchi I metric with an f(R;T) gravity. The functional form for the f(R;T) gravity assumed to be f(R;T) = R + 2f(T), where R and T respectively the Ricci scalar and trace of energy momentum tensor. Two different models are constructed with respect to the scale factors, such as Power law scale factor and Hybrid scale factor. Moreover, the anisotropic parameter taken here in the form of hyperbolic function that further gives clarity on the behaviour of Equation of State (EOS) parameter. The models can be reduced to isotropic universe when the coefficient constant vanishes. For both the cases,the deceleration parameter, state fi?nder diagnostic pairs and energy conditions have been obtained and analyzed which provide physical plausibility of the models.

Keywords: Modified Gravity; Cosmology; Anisotropy; Equation of State; Deceleration Parameter.

Primary author

Bivudutta Mishra (BITS-Pilani, Hyderabad Campus)

Presentation materials