Large - N Gauge Theories
نویسنده
چکیده
Four pedagogical Lectures at the NATO-ASI on “Quantum Geometry” in Akureyri, Iceland, August 1999.
منابع مشابه
Anomaly Free Non-Supersymmetric Large N Gauge Theories from Orientifolds
We construct anomaly free non-supersymmetric large N gauge theories from orientifolds of Type IIB on C/Γ orbifolds. In particular, massless as well as tachyonic one-loop tadpoles are cancelled in these models. This is achieved by starting with N = 1, 2 supersymmetric orientifolds with well defined worldsheet description and including discrete torsion (which breaks supersymmetry) in the orbifold...
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Extending the recent work in [1], we consider string perturbative expansion in the presence of D-branes and orientifold planes imbedded in orbifolded space-time. In the α → 0 limit the weak coupling string perturbative expansion maps to ‘t Hooft’s large N expansion. We focus on four dimensional N = 1, 2, 4 supersymmetric theories, and also discuss possible extensions to N = 0 cases. Utilizing t...
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Some physical results in four dimensional large N gauge theories on a periodic torus are summarized.
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We consider D-branes and orientifold planes embedded in non-compact (orbifolded) space-time. We point out that even in the non-compact cases we can turn on non-zero (quantized) NS-NS antisymmetric B-field. In particular, we study the effect of the B-field on four dimensional large N gauge theories from orientifolds. Thus, in theories with both D3and D7-branes, the effect of the B-field is non-t...
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