arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.05829math.AP
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双泡波映射的渐近展开

An asymptotic expansion of two-bubble wave maps

Jacek Jendrej, Andrew Lawrie

摘要:

这是两篇论文系列的第一部分,该系列建立了在两个时间方向上都不分散的阈值能量波图的唯一性和规律性。考虑1+2维Minkowski空间上的两球值等变能量临界波映射方程,等变类k>3。我们知道,每个拓扑平凡的波映射,其能量小于唯一k-等变调和映射Q的能量的两倍,在两个时间方向上都是散射的。我们研究的地图,正是阈值能量,即,能量的两倍。在本文中,我们给出了一个改进的构造波映射的阈值能量,收敛到两个谐波映射(泡沫)的叠加,渐近解耦的规模。我们证明了该双泡解具有H^2正则性。我们给出了一个精确的动力学描述的调制参数以及扩展的映入配置文件。在该系列的下一篇论文中,我们证明了这个解是唯一的(直到方程的自然不变性),这取决于这里构造的解的详细性质。结合我们以前的工作,我们现在可以给出每个阈值波图的精确描述。

英文摘要:

This is the first part of a two-paper series that establishes the uniqueness and regularity of a threshold energy wave map that does not scatter in both time directions. Consider the two-sphere valued equivariant energy critical wave maps equation on 1+2 dimensional Minkowski space, with equivariance class k>3. It is known that every topologically trivial wave map with energy less than twice that of the unique k-equivariant harmonic map Q scatters in both time directions. We study maps with precisely the threshold energy, i.e., twice the energy of Q. In this paper, we give a refined construction of a wave map with threshold energy that converges to a superposition of two harmonic maps (bubbles), asymptotically decoupling in scale. We show that this two-bubble solution possesses H^2 regularity. We give a precise dynamical description of the modulation parameters as well as an expansion of the map into profiles. In the next paper in the series, we show that this solution is unique (up to the natural invariances of the equation) relying crucially on the detailed properties of the solution constructed here. Combined with our earlier work, we can now give an exact description of every threshold wave map.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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