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Paper   IPM / Physic / 6972
School of Physics
  Title:   N=1 G2 SYM theory and Compactification to Three Dimensions
  Author(s): 
1.  M. Alishahiha
2.  J. de Boer
3.  Amir E. Mosaffa
4.  J. Wijnhout
  Status:   Published
  Journal: JHEP
  No.:  13
  Vol.:  09
  Year:  2003
  Pages:   066
  Supported by:  IPM
  Abstract:
We study four dimensional N=2 G2 supersymmetric gauge theory on R3×S1 deformed by a tree level superpotential. We will show that the exact superpotential can be obtained by making use of the Lax matrix of the corresponding integrable model which is the periodic Toda lattice based on the dual of the affine G2 Lie algebra. At extrema of the superpotential the Seiberg-Witten curve typically factorizes, and we study the algebraic equations underlying this factorization. For U(N) theories the factorization was closely related to the geometrical engineering of such gauge theories and to matrix model descriptions, but here we will find that the geometrical interpretation is more mysterious. Along the way we give a method to compute the gauge theory resolvent and a suitable set of one-forms on the Seiberg-Witten curve. We will also find evidence that the low-energy dynamics of G2 gauge theories can effectively be described in terms of an auxiliary hyperelliptic curve.

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