Matrix Models, Argyres-Douglas singularities and double scaling limits

Details Matrix Models, Argyres-Douglas singularities and double scaling limits Matrix Models, Argyres-Douglas singularities and double scaling limits

2003-05-07

arxiv.org/abs/hep-th/0305058v2

JHEP 0306:027,2003

Physics

High Energy Physics

High Energy Physics - Theory

31 pages, 1 figure; the expression of the superpotential has been corrected and the calculation of the coupling constants of t

Scientific paper

10.1088/1126-6708/2003/06/027

We construct an N=1 theory with gauge group U(nN) and degree n+1 tree level superpotential whose matrix model spectral curve develops an A_{n+1} Argyres-Douglas singularity. We evaluate the coupling constants of the low-energy U(1)^n theory and show that the large N expansion is singular at the Argyres-Douglas points. Nevertheless, it is possible to define appropriate double scaling limits which are conjectured to yield four dimensional non-critical string theories as proposed by Ferrari. In the Argyres-Douglas limit the n-cut spectral curve degenerates into a solution with n/2 cuts for even n and (n+1)/2 cuts for odd n.

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