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of 169
pro vyhledávání: '"Dijkgraaf R"'
This note relates topics in statistical mechanics, graph theory and combinatorics, lattice quantum field theory, super quantum mechanics and string theory. We give a precise relation between the dimer model on a graph embedded on a torus and the mass
Externí odkaz:
http://arxiv.org/abs/0705.1645
Publikováno v:
JHEP 0404:028,2004
In this paper we discuss the contribution of planar diagrams to gravitational F-terms for N=1 supersymmetric gauge theories admitting a large N description. We show how the planar diagrams lead to a universal contribution at the extremum of the glueb
Externí odkaz:
http://arxiv.org/abs/hep-th/0310061
Publikováno v:
Phys.Lett.B573:138-146,2003
Using N=1 superspace techniques in four dimensions we show how to perturbatively compute the superpotential generated for the glueball superfield upon integrating out massive charged fields. The technique applies to arbitrary gauge groups and represe
Externí odkaz:
http://arxiv.org/abs/hep-th/0211017
We study the Type IIA NS five-brane wrapped on a Calabi-Yau manifold X in a double-scaled decoupling limit. We calculate the euclidean partition function in the presence of a flat RR 3-form field. The classical contribution is given by a sum over flu
Externí odkaz:
http://arxiv.org/abs/hep-th/0205281
Publikováno v:
JHEP 0206:027,2002
We study conformal field theories in two dimensions separated by domain walls, which preserve at least one Virasoro algebra. We develop tools to study such domain walls, extending and clarifying the concept of `folding' discussed in the condensed-mat
Externí odkaz:
http://arxiv.org/abs/hep-th/0111210
Autor:
Dijkgraaf, R.
In these notes we review the role played by the quantum mechanics and sigma models of symmetric product spaces in the light-cone quantization of quantum field theories, string theory and matrix theory. Lectures given at the Institute for Theoretical
Externí odkaz:
http://arxiv.org/abs/hep-th/9912104
Autor:
Dijkgraaf, R.
In this note we point out that a symmetric product orbifold CFT can be twisted by a unique nontrivial two-cocycle of the permutation group. This discrete torsion changes the spins and statistics of corresponding second-quantized string theory making
Externí odkaz:
http://arxiv.org/abs/hep-th/9912101
Autor:
Dijkgraaf, R.
Publikováno v:
Nucl.Phys. B543 (1999) 545-571
We discuss two-dimensional sigma models on moduli spaces of instantons on K3 surfaces. These N=(4,4) superconformal field theories describe the near-horizon dynamics of the D1-D5-brane system and are dual to string theory on AdS_3. We derive a precis
Externí odkaz:
http://arxiv.org/abs/hep-th/9810210
Autor:
Dijkgraaf, R.
Fivebranes are non-perturbative objects in string theory that generalize two-dimensional conformal field theory and relate such diverse subjects as moduli spaces of vector bundles on surfaces, automorphic forms, elliptic genera, the geometry of Calab
Externí odkaz:
http://arxiv.org/abs/hep-th/9810157
Publikováno v:
Nucl.Phys.Proc.Suppl. 62 (1998) 348-362
We review some recent developments in the study of M-theory compactifications via Matrix theory. In particular we highlight the appearance of IIA strings and their interactions, and explain the unifying role of the M-theory five-brane for describing
Externí odkaz:
http://arxiv.org/abs/hep-th/9709107