Abstract
We present a fully backreacted D3-D7 supergravity solution dual to the
Klebanov-Strassler cascading gauge theory coupled to a large number of massive dynamical
flavors in the Veneziano limit. The mass of the flavors can be larger or smaller than the
dynamically generated scale. The solution is always regular at the origin of the radial coordinate
and as such it can be suitably employed to explore the rich IR physics of the dual
gauge theory. In this paper we focus on the static quark-antiquark potential, the screening
of chromoelectric charges induced by the dynamical flavors, the flux tube breaking and
the mass spectrum of the first mesonic excitations. Moreover, we discuss the occurrence of
quantum phase transitions in the connected part of the static quark-antiquark potential.
Depending on the ratio of certain parameters, like the flavor mass, with respect to some
critical values, we find a discontinuous (first order) or smooth transition from a Coulomblike
to a linear phase. We evaluate the related critical exponents finding that they take
classical mean-field values and argue that this is a universal feature of analogous first order
transitions occurring in the static potential for planar gauge theories having a dual
supergravity description.
Original language | Undefined/Unknown |
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Pages (from-to) | 153/1-153/44 |
Number of pages | 44 |
Journal | Journal of High Energy Physics |
Volume | 03 |
Publication status | Published - 2009 |