München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 25: Quantenfeldtheorie

T 25.5: Vortrag

Freitag, 13. März 2009, 15:00–15:15, M010

AdS/QCD at the correlator level — •Hilmar Forkel — Institut für Physik, Humboldt-Universität zu Berlin, Germany

We derive and analyze predictions of both the hard-wall and dilaton soft-wall approximations to AdS/QCD for the scalar glueball correlator and decay constants. We confront the results with QCD information from the lattice, the operator product expansion (OPE), a hypothetical UV gluon mass associated with the short-distance behavior of the heavy-quark potential, and a low-energy theorem based on the anomalous dilatational Ward identity. Both duals turn out to encode complementary aspects of the above, nonperturbative QCD physics. The OPE Wilson coefficients, in particular, are shown to provide a challenging testing ground for the impact of the strongly coupled holographic UV dynamics on dual gravity predictions.