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Non-Canonical Perturbation Theory of Non-Linear Sigma Models
Published 16 Jul 2010 in hep-th, math-ph, and math.MP | (1007.2820v1)
Abstract: We explore the O(N)-invariant Non-Linear Sigma Model (NLSM) in a different perturbative regime from the usual relativistic-free-field one, by using non-canonical basic commutation relations adapted to the underlying O(N) symmetry of the system, which also account for the non-trivial (non-flat) geometry and topology of the target manifold.
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