منابع مشابه
Branes and N = 2 Theories in Two Dimensions
Type IIA brane configurations are used to construct N = 2 supersymmetric gauge theories in two dimensions. Using localization of chiral multiplets in ten-dimensional spacetime, supersymmetric non-linear sigma models with target space such as CPn−1 and the Grassmann manifolds are studied in detail. The quantum properties of these models are realized in M theory by taking the strong Type IIA coup...
متن کاملPhases Of N = 2 Theories In 1 + 1 Dimensions With Boundary
We study B-type D-branes in linear sigma models with Abelian gauge groups. The most important finding is the grade restriction rule. It classifies representations of the gauge group on the Chan-Paton factor, which can be used to define a family of D-branes over a region of the Kähler moduli space that connects special points of different character. As an application, we find a precise, transpar...
متن کاملDynamics of N = 2 Supersymmetric Gauge Theories in Three Dimensions
We study the structure of the moduli spaces of vacua and superpotentials of N = 2 supersymmetric gauge theories in three dimensions. By analyzing the instanton corrections, we compute the the exact superpotentials and determine the quantum Coulomb and Higgs branches of the theories. We find candidates for non-trivial N = 2 superconformal field theories at the singularities of the moduli spaces....
متن کاملLarge - N quantum gauge theories in two dimensions
The partition function of a two-dimensional quantum gauge theory in the large-N limit is expressed as the functional integral over some scalar field. The large-N saddle point equation is presented and solved. The free energy is calculated as the function of the area and of the Euler characteristic. There is no non-trivial saddle point at genus g > 0. The existence of a non-trivial saddle point ...
متن کاملNew N=2 Superconformal Field Theories in Four Dimensions
New examples of N=2 supersymmetric conformal field theories are found as fixed points of SU(2) N=2 supersymmetric QCD. Relations among the scaling dimensions of their relevant chiral operators, global symmetries, and Higgs branches are understood in terms of the general structure of relevant deformations of non-trivial N=2 conformal field theories. The spectrum of scaling dimensions found are a...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1993
ISSN: 0550-3213
DOI: 10.1016/0550-3213(93)90033-l