English

Backreaction effects due to matter coupled higher derivative gravity

High Energy Physics - Theory 2015-06-11 v3

Abstract

AdS-hydrodynamics has proven to be a useful tool for obtaining transport coefficients observed in the collective flow of strongly coupled fluids like quark gluon plasma (QGP). Particularly, the ratio of shear viscosity to entropy density η/s{\eta/ s} obtained from elliptic flow measurements can be matched with the computation done in the dual gravity theory. The experimentally observed temperature dependence of η/s{\eta/ s} requires the study of scalar matter coupled AdS gravity including higher derivative curvature corrections. We obtain the backreaction to the metric for such a matter coupled AdS gravity in DD-dimensional spacetime due to the higher derivative curvature corrections. Then, we present the backreaction corrections to shear-viscosity η\eta and entropy density ss.

Keywords

Cite

@article{arxiv.1409.8019,
  title  = {Backreaction effects due to matter coupled higher derivative gravity},
  author = {Lata Kh Joshi and P. Ramadevi},
  journal= {arXiv preprint arXiv:1409.8019},
  year   = {2015}
}

Comments

14+1 pages, minor typos corrected,added appendix and references

R2 v1 2026-06-22T06:08:01.372Z