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BPS Quivers and N=2 superconformal theories

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The BPS spectrum of a large class of N=2 theories can be encoded in an oriented graph called BPS quiver. In this talk I will review the BPS quiver technique and the 4d/2d correspondence introduced by Cecotti, Neitzke and Vafa. In the second part of the talk, based on a work in collaboration with Sergio Cecotti and Michele Del Zotto, I will explain how the BPS quiver technology can be used to study a new class of N=2 superconformal models construceted via Type IIB geometric engineering. The computation of various quantities of interest such as scaling dimensions of chiral operators and central charges can be related via the 4d/2d correspondence to two­dimensional problems.

This talk is part of the Quantum Fields and Strings Seminars series.

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