Sum rules, plasma frequencies and Hall phenomenology in holographic plasmas

Details Sum rules, plasma frequencies and Hall phenomenology in holographic plasmas Sum rules, plasma frequencies and Hall phenomenology in holographic plasmas

2010-10-27

arxiv.org/abs/1010.5613v2

JHEP 1102:015,2011

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, 5 figures. v2.minor changes, published version

Scientific paper

10.1007/JHEP02(2011)015

We study the AC optical and hall conductivities of Dp/Dq-branes intersections in the probe approximation and use sum-rules to study various associated transport coefficients. We determine that the presence of massive fundamental matter, as compared to massless fundamental matter described holographically by a theory with no dimensional defects, reduces the plasma frequency. We further show that this is not the case when the brane intersections include defects. We discuss in detail how to implement correctly the regularization of retarded Green's functions so that the dispersion relations are satisfied and the low energy behaviour of the system is physically realistic.

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