Energy identity for approximate harmonic maps from surfaces to general targets

Energy identity for approximate harmonic maps from surfaces to general targets
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从表面到一般目标的近似谐波图的能量恒等式

DOI:
10.1016/j.jfa.2016.09.018
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发表时间:
2016-03
影响因子:
1.7
通讯作者:
Zhang Zhifei
Zhang Zhifei
中科院分区:
数学1区
文献类型:
--
作者:
Wang Wendong;Wei Dongyi;Zhang Zhifei

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令 u n 为从闭黎曼曲面 M 到一般黎曼流形 N 的映射序列。如果 u n 满足 su n⁡(‖∇ u n‖ L 2 (M)+‖ τ (u n)‖ L p (M))≤ Λ (对于某些 p> 1),其中 τ (u n) 是 u n 的张力场,则所谓的能量恒等式和无颈性质在爆炸期间保持。这个结果在 Parker 的例子中很明显,其中黎曼表面映射的张力场以 L 1 (M) 为界,但能量恒等式失败。
Let u n be a sequence of mappings from a closed Riemannian surface M to a general Riemannian manifold N. If u n satisfies sup n⁡(‖∇ u n‖ L 2 (M)+‖ τ (u n)‖ L p (M))≤ Λ for some p> 1, where τ (u n) is the tension field of u n, then the so called energy identity and neckless property hold during blowing up. This result is sharp by Parker's example, where the tension fields of the mappings from Riemannian surface are bounded in L 1 (M) but the energy identity fails.
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