Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2003-11-14
JHEP0401:015,2004
Physics
High Energy Physics
High Energy Physics - Lattice
29 pages, 1 figure, LaTeX, (v2) problem on degenerate vacua discussed, renormalization arguments modified, (v3) explanations a
Scientific paper
10.1088/1126-6708/2004/01/015
We construct super Yang-Mills theories with extended supersymmetry on hypercubic lattices of various dimensions keeping one or two supercharges exactly. Gauge fields are represented by ordinary unitary link variables, and the exact supercharges are nilpotent up to gauge transformations. Among the models, we show that the desired continuum theories are obtained without any fine tuning of parameters for the cases ${\cal N}=2, 4, 8$ in two-dimensions.
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