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MiS Preprint
11/2017
Energy identity for a class of approximate Dirac-harmonic maps from surfaces with boundary
Jürgen Jost, Lei Liu and Miaomiao Zhu
Abstract
For a sequence of coupled fields $\{(\phi_n,\psi_n)\}$ from a compact Riemann surface $M$ with smooth boundary to a general compact Riemannian manifold with uniformly bounded energy and satisfying the Dirac-harmonic system up to some uniformly controlled error terms, we show that the energy identity holds during a blow-up process near the boundary. As an application to the heat flow of Dirac-harmonic maps from surfaces with boundary, when such a flow blows up at infinite time, we obtain an energy identity