By Andrei Domrin and others

Noncommutative multi-solitons are investigated in Euclidean two-dimensional U(n) and Grassmannian sigma models, using the auxiliary Fock-space formalism. Their construction and moduli spaces are reviewed in some detail, unifying abelian and nonabelian configurations. The analysis of linear perturbations around these backgrounds reveals an unstable mode for the U(n) models but shows... Show more

March 18, 2005

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Sigma-Model Solitons in the Noncommutative Plane: Construction and Stability Analysis

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