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Field Theory Dynamics from Branes in String Theory
Andreas Karch
I review certain aspects of Hanany-Witten setups and other approaches used to embed (and solve) gauge theories in string theory. Applications covered include dualities in 4 and 3 d…
N=1 Supersymmetric Gauge Theories and Supersymmetric 3-cycles
Andreas Karch, Dieter Lust, Andre Miemiec
In this paper we discuss the strong coupling limit of chiral N=1 supersymmetric gauge theory via their embedding into M-theory. In particular we focus on the brane box models of Ha…
Infrared Behaviour of Softly Broken SQCD and Its Dual
Andreas Karch, Tatsuo Kobayashi, Jisuke Kubo +1
Applying the recently obtained results on the renormalization of soft supersymmetry-breaking parameters, we investigate the infrared behaviour of the softly broken supersymmetric Q…
Superconformal N=1 Gauge Theories, beta-Function Invariants and their Behavior under Seiberg Duality
Andreas Karch, Dieter Lust, George Zoupanos
In this paper we discuss some aspects of the behavior of superconformal N=1 models under Seiberg's duality. Our claim is that if an electric gauge theory is superconformal on some…
Equivalence of Geometric Engineering and Hanany-Witten via Fractional Branes
Andreas Karch, Dieter Lust, Douglas J. Smith
We present an explicit relation between the Hanany-Witten and Geometric Engineering approaches of realising gauge theories in string theory. The last piece in the puzzle is a T-dua…
Six-Dimensional Fixed Points from Branes
Ilka Brunner, Andreas Karch
We review the construction of six dimensional N=1 fixed points in a brane picture involving D6 branes stretching between NS 5 branes.