Rainer Heise

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We extend and test the method of Dijkgraaf and Vafa for computing the superpotential of N = 1 theories to include flavors in the fundamental representation of the gauge group. This amounts to computing the contribution to the superpotential from surfaces with one boundary in the matrix integral. We compute exactly the effective superpotential for the case(More)
We study the anomalous dimensions of single trace operators composed of field strengths F µν in large-N QCD. The matrix of anomalous dimensions is the Hamiltonian of a compact spin chain with two spin one representations at each vertex corresponding to the selfdual and anti-selfdual components of F µν. Due to the special form of the interaction it is(More)
We study the renormalization of gauge invariant operators in large N c QCD. We compute the complete matrix of anomalous dimensions to leading order in the 't Hooft coupling and study its eigenvalues. Thinking of the mixing matrix as the Hamiltonian of a generalized spin chain we find a large integrable sector consisting of purely gluonic operators(More)
We study the corrections induced by a baryon vertex to the su-perpotential of SQCD with gauge group SU (N) and N quark flavors. We first compute the corrections order by order using a standard field theory technique and derive the corresponding glueball superpotential by " integrating in " the glueball field. The structure of the corrections matches with(More)
Growth of Acetobacterium woodii on fructose was stimulated by Na+; this stimulation was paralleled by a shift of the acetate-fructose ratio from 2.1 to 2.7. Growth on H2-CO2 or on methanol plus CO2 was strictly dependent on the presence of sodium ions in the medium. Acetate formation from formaldehyde plus H2-CO by resting cells required Na+, but from(More)
We study warped compactifications to three dimensions, realized as an orientifold of type IIA string theory on T 7. By turning on 3-and 4-form fluxes on the torus in a supersymmetric way, we generate a potential for the moduli fields. We present various flux configurations with N = 1, 2, 3, 4, 5, 6 supersymmetries and count the number of moduli in each(More)
We study chiral SU (N) supersymmetric gauge theories with matter in the antifundamental and antisymmetric representations. For SU (5) with two families, we show how to reproduce the non-perturba-tively generated superpotential, and we discuss dynamical supersym-metry breaking purely in terms of the Konishi anomaly. We apply the same technique in general to(More)
We study the fermionic sector of a probe D8-brane in the supergravity background made of D4-branes compactified on a circle with supersymmetry broken explicitly by the boundary conditions. At low energies the dual field theory is effectively four-dimensional and has proved surprisingly successful in recovering qualitative and quantitative properties of QCD.(More)
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