Sum rules and three point functions

David, Justin R and Thakur, Somyadip (2012) Sum rules and three point functions. In: JOURNAL OF HIGH ENERGY PHYSICS (11).

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Abstract

Sum rules constraining the R-current spectral densities are derived holographically for the case of D3-branes, M2-branes and M5-branes all at finite chemical potentials. In each of the cases the sum rule relates a certain integral of the spectral density over the frequency to terms which depend both on long distance physics, hydrodynamics and short distance physics of the theory. The terms which which depend on the short distance physics result from the presence of certain chiral primaries in the OPE of two it-currents which are turned on at finite chemical potential. Since these sum rules contain information of the OPE they provide an alternate method to obtain the structure constants of the two R-currents and the chiral primary. As a consistency check we show that the 3 point function derived from the sum rule precisely matches with that obtained using Witten diagrams.

Item Type:	Journal Article
Publication:	JOURNAL OF HIGH ENERGY PHYSICS
Publisher:	SPRINGER
Additional Information:	Copyright for this article belongs to SPRINGER, NEW YORK,
Keywords:	Gauge-gravity correspondence;Black Holes in String Theory;AdS-CFT Correspondence
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	16 Jan 2013 12:44
Last Modified:	16 Jan 2013 12:44
URI:	http://eprints.iisc.ac.in/id/eprint/45646

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