English

Cosmological reconstruction of $f(T,\mathcal{T})$ Gravity

General Relativity and Quantum Cosmology 2018-10-09 v2

Abstract

Motivated by the newly proposal for gravity as the effect of the torsion scalar TT and trace of the energy momentum tensor T\mathcal{T},we investigate the cosmological reconstruction of different models of the Universe. Our aim here is to show that how this modified gravity model, f(T,T)f(T,\mathcal{T}) is able to reproduce different epoches of the cosmological history. We explicitly show that f(T,T)f(T,\mathcal{T}) can be reconstructed for Λ\Lambda CDM as the most popular and consistent model. Also we study the mathematical reconstruction of f(T,T)f(T,\mathcal{T}) for a flat cosmological background filled by two fluids mixture. Such model describes phantom-non-phantom era as well as the purely phantom cosmology. We extend our investigation to more cosmological models like perfect fluid,Chaplygin gas and massless scalar field. In each case we obtain some specific forms of f(T,T)f(T,\mathcal{T}). These families of f(T,T)f(T,\mathcal{T}) contain arbitrary function of torsion and trace of the energy momentum.

Keywords

Cite

@article{arxiv.1405.5863,
  title  = {Cosmological reconstruction of $f(T,\mathcal{T})$ Gravity},
  author = {Davood Momeni and Ratbay Myrzakulov},
  journal= {arXiv preprint arXiv:1405.5863},
  year   = {2018}
}

Comments

references added, Accepted for publication in "International Journal of Geometric Methods in Modern Physics."