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Good IR Duals of Bad Quiver Theories. (arXiv:1712.06068v1 [hep-th])
来源于:arXiv
The infrared dynamics of generic 3d N=4 bad theories (as per the
good-bad-ugly classification of Gaiotto and Witten) are poorly understood.
Examples of such theories with a single unitary gauge group and fundamental
flavors have been studied recently, and the low energy effective theory around
some special point in the Coulomb branch was shown to have a description in
terms of a good theory and a certain number of free hypermultiplets. A
classification of possible infrared fixed points for bad theories by Bashkirov,
based on unitarity constraints and superconformal symmetry, suggest a much
richer set of possibilities for the IR behavior, although explicit examples
were not known. In this note, we present a specific example of a bad quiver
gauge theory which admits a good IR description on a sublocus of its Coulomb
branch. The good description, in question, consists of two decoupled quiver
gauge theories with no free hypermultiplets. 查看全文>>