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arxiv: 1303.4921 · v1 · pith:2GLCOPPTnew · submitted 2013-03-20 · ✦ hep-lat · hep-th

Confinement in large N gauge theories

classification ✦ hep-lat hep-th
keywords resultscaselargestringtensionfiniteflavoursgauge
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We report some recent results obtained for large N gauge theories which support the idea of volume reduction. Results for the string tension of the Twisted Eguchi-Kawai model match with those obtained from extrapolation from finite N. Determination of other observables is currently under way. Application of the twisted reduction idea to the case of 1 or 2 flavours of quarks in the adjoint representation of the group offers promising results. Preliminary results for the string tension point towards a very different behaviour for 1 and 2 flavours. While the string tension remains finite for 1 flavour at the critical massless quark limit, it seems to vanish with a large anomalous dimension for the $N_f=2$ case. This is consistent with the predicted Infrared fixed point expected in the latter case.

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