## strings@ar

XLII Encuentro de la red strings@ar.

Viernes 20 de agosto de 2010, Departamento de Física de la Universidad de Buenos Aires

PROGRAMA

Viernes 20 de agosto de 2010

Aula de Seminarios, Departamento de Física, Univ. de Buenos Aires14h00 - 15h00 Carlos A. Cardona (IAFE, Buenos Aires)

Worldsheet correlation functions in AdS_{3}/CFT_{2}15h00 - 15h30 Café 15h30 - 16h30 Matías Leoni (Univ. degli Studi di Milano, Italy)

Magnon dispersion relation in AdS_{4}/CFT_{3}16h30 - 17h00 Café 17h00 - 18h00 Martin Schvellinger (IFLP-CONICET, La Plata)

Two-point correlators of R-symmetry currents at finite 't Hooft coupling

Carlos A. Cardona (IAFE, Buenos Aires)

Worldsheet correlation functions in AdS_{3}/CFT_{2}

One of the simplest realizations of the AdS/CFT duality, is the one relating type IIB string theory in AdS_{3}xS^{3}xT^{4}with some two-dimensional SCFT on the symmetric product of N copies of T^{4}. In this talk we will review some recent test of this duality through the comparison of correlation functions in both sides of the correspondence. We shall mainly discuss four-point functions in small cross-ratios, where we found some slight evidence of a possible extension of the non-renormalization theorem.

Martin Schvellinger (IFLP-CONICET, La Plata)

Two-point correlators of R-symmetry currents at finite 't Hooft coupling

I will discuss on the role of two-point correlation functions of R-symmetry currents in the holographic dual description of supersymmetric plasmas at low and high momentum regimes. I will focuss on the leading finite 't Hooft coupling corrections to the correlators, obtained from α'^{3}string theory corrections to type IIB supergravity. In the hydrodynamical regime I will show results on the plasma conductivity. On the other hand, at large momentum I will discuss about implications on deep inelastic scattering.