Wilson Loops for a quark anti-quark pair in D3-brane space

We calculate static Wilson loops for a heavy quark anti-quark pair in different positions in the space generated by a large number of coincident D3-branes. Simple results are obtained from limiting cases of the geodesic shape. In particular, quark anti-quark static potentials for flat and AdS spaces are reproduced.Comment: Revised version published in JHE

Gauge/string duality and hadronic physics

We review some recent results on phenomenological approaches to strong interactions inspired in gauge/string duality. In particular, we discuss how such models lead to very good estimates for hadronic masses.Comment: 5pages, talk presented in I Latin American Workshop on High Energy Phenomenology, Porto Alegre, Brazil, December 2005, to appear in the proceeding