منابع مشابه
Heavy flavor decays, OPE and duality in two-dimensional ’t Hooft model
The ’t Hooft model (two-dimensional QCD in the limit of large number of colors) is used as a laboratory for exploring various aspects of the heavy quark expansions in the nonleptonic and semileptonic decays of heavy flavors. We perform a complete operator analysis and construct the operator product expansion (OPE) up to termsO(1/mQ), inclusively. The OPE-based predictions for the inclusive widt...
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We consider two operations on an edge of an embedded graph (or equivalently a ribbon graph): giving a half-twist to the edge, and taking the partial dual with respect to the edge. These two operations give rise to an action of S3 |E(G)|, the ribbon group, on G. The action of the ribbon group on embedded graphs extends the concepts of duality, partial duality, and Petrie duality. We show that th...
متن کاملTwisted Duality and Polynomials of Embedded Graphs
We consider two operations on the edge of an embedded graph (or equivalently a ribbon graph): giving a half-twist to the edge and taking the partial dual with respect to the edge. These two operations give rise to an action of S3 e(G), the ribbon group of G, on G. We show that this ribbon group action gives a complete characterization of duality in that if G is any cellularly embedded graph wit...
متن کاملTwisted K-theory and Poincaré duality
Using methods of KK-theory, we generalize Poincaré K-duality to the framework of twisted K-theory.
متن کاملTowards OPE based local quark-hadron duality: Light-quark channels
Various light-quark channel current-current correlators are subjected to the concept of a non-perturbative component of coarse graining in operator product expansions introduced in a parallel work. This procedure allows for low-energy structure of the OPE-derived spectral function. With naive vacuum saturation for 4 quark operators and using lattice data for the gauge invariant scalar quark cor...
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ژورنال
عنوان ژورنال: International Mathematics Research Notices
سال: 2012
ISSN: 1687-0247,1073-7928
DOI: 10.1093/imrn/rns258