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Nonlinear electrodynamics in f(T) gravity and generalized second law of thermodynamics

Abstract

In this paper, we study the nonlinear electrodynamics in the framework of f(T) gravity for FRW universe along with dust matter, magnetic and torsion contributions. We evaluate the equation of state and deceleration parameters to explore the accelerated expansion of the universe. The validity of generalized second law of thermodynamics for Hubble and event horizons is also investigated in this scenario. For this purpose, we assume polelike and power-law forms of scale factor and construct f(T) models. The graphical behavior of the cosmological parameters versus smaller values of redshift z represent the accelerated expansion of the universe. It turns out that the generalized second law of thermodynamics holds for all values of z with Hubble and event horizons in polelike scale factor whereas for power-law form, it holds in a specific range of z for both horizons.

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Correspondence to M. Sharif.

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Sharif, M., Rani, S. Nonlinear electrodynamics in f(T) gravity and generalized second law of thermodynamics. Astrophys Space Sci 346, 573–582 (2013). https://doi.org/10.1007/s10509-013-1480-8

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  • DOI: https://doi.org/10.1007/s10509-013-1480-8

Keywords

  • f(T) gravity
  • Magnetic field
  • Dark energy
  • Generalized second law of thermodynamics