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The fast life of holographic mesons

Abstract:

We use holographic techniques to study thermal properties of SU(N)  super Yang-Mills theory coupled to M (<< N) flavours of fundamental matter, at large N and large 't Hooft coupling. The dual description consists of M D7-branes in the background of N black D3-branes. In particular, we focus on the behaviour of meson quasiparticles moving
through the thermal plasma. These quasiparticles are found to obey a "speed limit'' which can be much less than the speed of light. Further on this model, the widths of the quasiparticles rises dramatically as they approach the limiting velocity.