The light spectrum near the Argyres-Douglas point

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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7 pages. Latex

Scientific paper

10.1016/S0370-2693(99)00935-1

We consider N = 2 super Yang-Mills theory with SU(2) gauge group and a single quark hypermultiplet in the fundamental representation. For a specific value of the quark bare mass and at a certain point in the moduli space of vacua, the central charges corresponding to two mutually non-local electro-magnetic charges vanish simultaneously, indicating the possibility of massless such states in the spectrum. By realizing the theory as an M-theory configuration, we show that these states indeed exist in the spectrum near the critical point.

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