A fluid/gravity prescription of the post-Newtonian parameter

8th International Workshop DICE2016: Spacetime - Matter - Quantum Mechanics

物理学;力学

Da Rocha, Roldão^1

Centro de Matemática, Computação e Cognição, Universidade Federal Do ABC UFABC, Santo André

09210-580, Brazil^1

关键词: Black brane;    Black strings;    Boundary energies;    Entropy density;    Post-Newtonian parameters;    Schwarzschild;    Temperature increase;    Theoretical bounds;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/880/1/012040/pdf
DOI  :  10.1088/1742-6596/880/1/012040

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The KSS bound for the shear viscosity-to-entropy density ratio is employed in the fluid/gravity correspondence setup, to provide a theoretical bound for the post-Newtonian parameter in the Casadio-Fabbri-Mazzacurati black string solution that matches the observational bound [1]. This derived bound is here shown to vary according to the black string temperature, and, although the post-Newtonian parameter reaches bigger values as the temperature increases for fixed black string masses, it is still into the observational/experimental bound range. The Casadio-Fabbri-Mazzacurati-AdS black brane is shown to converge to the Schwarzschild-AdS black brane, for sufficiently high order expansion of the dual boundary energy-momentum tensor.