Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-02-10
JHEP 0703:112,2007
Physics
High Energy Physics
High Energy Physics - Theory
18 pages, LaTeX, uses utarticle.cls, xypic, v2:minor corrections, v3:more minor corrections
Scientific paper
10.1088/1126-6708/2007/03/112
A number of new papers have greatly elucidated the derivation of quiver gauge theories from D-branes at a singularity. A complete story has now been developed for the total space of the canonical line bundle over a smooth Fano 2-fold. In the context of the AdS/CFT conjecture, this corresponds to eight of the ten regular Sasaki-Einstein 5-folds. Interestingly, the two remaining spaces are among the earliest examples, the sphere and T^{11}. I show how to obtain the (well-known) quivers for these theories by interpreting the canonical line bundle as the resolution of an orbifold using the McKay correspondence. I then obtain the correct quivers by undoing the orbifold. I also conjecture, in general, an autoequivalence that implements the orbifold group action on the derived cateory. This yields a new order two autoequivalence for the Z_2 quotient of the conifold.
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