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Title: An unconstrained Lagrangian formulation and conservation laws for the Schrödinger map system

Journal Article · · Journal of Mathematical Physics
DOI:https://doi.org/10.1063/1.4874106· OSTI ID:22250648
 [1]
  1. Department of Mathematics, University of California, Berkeley, California 94720 (United States)

We consider energy-critical Schrödinger maps from R{sup 2} into S{sup 2} and H{sup 2}. Viewing such maps with respect to orthonormal frames on the pullback bundle provides a gauge field formulation of the evolution. We show that this gauge field system is the set of Euler-Lagrange equations corresponding to an action that includes a Chern-Simons term. We also introduce the stress-energy tensor and derive conservation laws. In conclusion we offer comparisons between Schrödinger maps and the closely related Chern-Simons-Schrödinger system.

OSTI ID:
22250648
Journal Information:
Journal of Mathematical Physics, Vol. 55, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-2488
Country of Publication:
United States
Language:
English