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arXiv · 0706.0162

Holographic spectral functions and diffusion constants for fundamental matter

Robert C. Myers·Andrei O. Starinets·Rowan M. Thomson
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Abstract

The holographic dual of large-Nc super-Yang-Mills coupled to a small number of flavours of fundamental matter, Nf << Nc, is described by Nf probe D7-branes in the gravitational background of Nc black D3-branes. This system undergoes a first order phase transition characterised by the `melting' of the mesons. We study the high temperature phase in which the D7-branes extend through the black hole horizon. In this phase, we compute the spectral function for vector, scalar and pseudoscalar modes on the D7-brane probe. We also compute the diffusion constant for the flavour currents.

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Robert C. Myers, Andrei O. Starinets, Rowan M. Thomson. 2007-10-25. Holographic spectral functions and diffusion constants for fundamental matter. https://doi.org/10.1088/1126-6708%2F2007%2F11%2F091

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