Yuji Tachikawa

Publications (1)0 Total impact

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  Available from: Yutaka Matsuo

  Article: N=2 gauge theories and degenerate fields of Toda theory

  Shoichi Kanno, Yutaka Matsuo, Shotaro Shiba, Yuji Tachikawa
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  ABSTRACT: We discuss the correspondence between degenerate fields of the W_N algebra and punctures of Gaiotto's description of the Seiberg-Witten curve of N=2 superconformal gauge theories. Namely, we find that the type of degenerate fields of the W_N algebra, with null states at level one, is classified by Young diagrams with N boxes, and that the singular behavior of the Seiberg-Witten curve near the puncture agrees with that of W_N generators. We also find how to translate mass parameters of the gauge theory to the momenta of the Toda theory. Comment: 23 pages,v2: minor corrections,published version
  11/2009;