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arXiv · 1409.8019

Backreaction effects due to matter coupled higher derivative gravity

Lata Kh Joshi·P. Ramadevi
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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 ${η/ s}$ obtained from elliptic flow measurements can be matched with the computation done in the dual gravity theory. The experimentally observed temperature dependence of ${η/ s}$ 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 $D$-dimensional spacetime due to the higher derivative curvature corrections. Then, we present the backreaction corrections to shear-viscosity $η$ and entropy density $s$.

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Lata Kh Joshi, P. Ramadevi. 2014-11-28. Backreaction effects due to matter coupled higher derivative gravity. https://doi.org/10.1142/s0217732315500650

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