Glueballs, symmetry breaking and axionic strings in non-supersymmetric deformations of the Klebanov-Strassler background

MARTIN SCHVELLINGER

JOURNAL OF HIGH ENERGY PHYSICS - (Online)

SISSA

Lugar: Trieste - Italy; Año: 2004 vol. 04 p. 1 - 23

1029-8479

We obtain an analytic solution for a pseudo-scalar massless perturbation of a non-supersymmetric deformation of the warped deformed conifold. This allows us to study D-strings in the infrared limit of non-supersymmetric deformations of the Klebanov-Strassler background. They are interpreted as axionic strings in the dual field theory. Following the arguments of [1], the axion is a massless pseudo-scalar glueball which is present in the supergravity fluctuation spectrum and it is interpreted as the Goldstone boson of the spontaneously broken U(1)_B baryon number symmetry, being the gauge theory on the baryonic branch.