On Vanishing Theorems for Vector Bundle Valued p-Forms and their Applications
On Vanishing Theorems for Vector Bundle Valued p-Forms and their Applications
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DOI:
10.1007/s00220-011-1227-8
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发表时间:
2010-03
影响因子:
2.4
通讯作者:
Yuxin Dong;S. Wei
中科院分区:
文献类型:
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作者:
Yuxin Dong;S. Wei
LetF: [0, ∞) → [0, ∞) be a strictly increasingC2function withF(0) = 0. We unify the concepts ofF-harmonic maps, minimal hypersurfaces, maximal spacelike hypersurfaces, and Yang-Mills Fields, and introduceF-Yang-Mills fields,F-degree,F-lower degree, and generalized Yang-Mills-Born-Infeld fields (with the plus sign or with the minus sign) on manifolds. WhenandtheF-Yang-Mills field becomes an ordinary Yang-Mills field,p-Yang-Mills field, a generalized Yang-Mills-Born-Infeld field with the plus sign, and a generalized Yang-Mills-Born-Infeld field with the minus sign on a manifold respectively. We also introduce theEF,g−energy functional (resp.F-Yang-Mills functional) and derive the first variational formula of theEF,g−energy functional (resp.F-Yang-Mills functional) with applications. In a more general frame, we use a unified method to study the stress-energy tensors that arise from calculating the rate of change of various functionals when the metric of the domain or base manifold is changed. These stress-energy tensors are naturally linked toF-conservation laws and yield monotonicity formulae, via the coarea formula and comparison theorems in Riemannian geometry. Whereas a “microscopic” approach to some of these monotonicity formulae leads to celebrated blow-up techniques and regularity theory in geometric measure theory, a “macroscopic” version of these monotonicity inequalities enables us to derive some Liouville type results and vanishing theorems forp−forms with values in vector bundles, and to investigate constant Dirichlet boundary value problems for 1-forms. In particular, we obtain Liouville theorems forF−harmonic maps (which include harmonic maps,p-harmonic maps, exponentially harmonic maps, minimal graphs and maximal space-like hypersurfaces, etc.),F−Yang-Mills fields, extended Born-Infeld fields, and generalized Yang-Mills-Born-Infeld fields (with the plus sign and with the minus sign) on manifolds, etc. As another consequence, we obtain the unique constant solution of the constant Dirichlet boundary value problems on starlike domains for vector bundle-valued 1-forms satisfying anF-conservation law, generalizing and refining the work of Karcher and Wood on harmonic maps. We also obtain generalized Chern type results for constant mean curvature type equations forp−forms onand on manifoldsMwith the global doubling property by a different approach. The casep= 0 andis due to Chern.