English

Comment to ''On Anisotropic Dark Energy Stars''

General Relativity and Quantum Cosmology 2008-05-21 v2

Abstract

The authors of the paper ''On Anisotropic Dark Energy Stars'', arXiv:0803.2508 [gr-qc], consider the equations of state pr=ωρp_r=\omega \rho and pt=ωρp_t=\omega \rho, ignoring the fact that this implies an isotropic pressure, which places strict restrictions on the values of ω\omega. The authors then argue for an anisotropic pressure fluid throughout their work, and apply these equations of state to the energy conditions, consequently obtaining incorrect intervals for the parameter ω\omega. This procedure invalidates their criticisms on the following paper: Class.Quant.Grav. 23, 1525 (2006).

Cite

@article{arxiv.0805.2309,
  title  = {Comment to ''On Anisotropic Dark Energy Stars''},
  author = {Francisco S. N. Lobo},
  journal= {arXiv preprint arXiv:0805.2309},
  year   = {2008}
}

Comments

4 pages. V2: typo corrected in Ref.[4]