Year: 2010
Type: article
Abstract: We study a brane configuration of $D4$-branes and $NS5$-branes in weakly coupled type IIA string theory, which describes in a particular limit $d=4$ $\mathcal{N}=1$ $SU(N+p)$ supersymmetric QCD with $2N$ flavors and a quartic superpotential. We describe the geometric realization of the supersymmetric vacuum structure of this gauge theory. We focus on the confining vacua of the gauge theory, whose holographic description is given by the MQCD brane configuration in the near-horizon geometry of $N$ $D4$-branes. This description, which gives an embedding of MQCD into a field theory decoupled from gravity, is valid for $1\ensuremath{\ll}p\ensuremath{\ll}N$, in the limit of large five-dimensional `t Hooft couplings for the color and flavor groups. We analyze various properties of the theory in this limit, such as the spectrum of mesons, the finite temperature behavior, and the quark-antiquark potential. We also discuss the same brane configuration on a circle, where it gives a geometric description of the moduli space of the Klebanov-Strassler cascading theory, and some nonsupersymmetric generalizations.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3037393136