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arXiv 1206.2116math.APmath.DG
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共形不变的变分问题

Conformally Invariant Variational Problems

Tristan Rivière

摘要:

共形不变性在共形域论、重整化理论、湍流、广义相对论等物理学的许多领域中起着重要的作用。自然,它也起着重要的作用,在几何:理论的黎曼曲面,外尔张量,$Q$-曲率,杨米尔斯领域,等等.我们将研究分析中的共形不变性。更准确地说,我们将集中研究共形不变的二维变分问题(例如调和映射,规定的中曲率曲面,Willmore和约束共形曲面,等温曲面)所产生的非线性偏微分方程。本手稿是作者在温哥华UBC、比萨SNS、巴黎国际水文计划、的里雅斯特国际理论物理中心等多个地方讲授课程的讲稿。

英文摘要:

Conformal invariance plays a significant role in many areas of Physics, such as conformal field theory, renormalization theory, turbulence, general relativity. Naturally, it also plays an important role in geometry: theory of Riemannian surfaces, Weyl tensors, $Q$-curvature, Yang-Mills fields, etc... We shall be concerned with the study of conformal invariance in analysis. More precisely, we will focus on the study of nonlinear PDEs arising from conformally invariant two dimensional variational problems (e.g. harmonic maps, prescribed mean curvature surfaces, Willmore and Constrained conformal surfaces, isothermic surfaces). The present manuscript are lecture notes of courses given by the author at several places including UBC Vancouver, SNS Pisa, IHP Paris, ICTP Trieste.

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