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arXiv 0803.1652math-phmath.MP
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非对哈密顿量的谱理论

Spectral theory of no-pair Hamiltonians

Oliver Matte, Edgardo Stockmeyer

摘要:

本文证明了在经典外磁场作用下,描述一个原子或带正电荷的离子与多个电子的一类非对哈密顿量的HVZ定理。此外,我们还证明了在本质谱以下存在无穷多个本征值,并且相应的本征函数是指数局部化的。新颖之处在于,静电和磁矢量势以及非局部交换势被包括在确定模型的投影中。作为一个主要的技术工具,我们推导出各种交换子估计涉及狄拉克算子与外场的谱投影。我们的结果适用于所有小于或等于137的核电荷。

英文摘要:

We prove a HVZ theorem for a general class of no-pair Hamiltonians describing an atom or positively charged ion with several electrons in the presence of a classical external magnetic field. Moreover, we show that there exist infinitely many eigenvalues below the essential spectrum and that the corresponding eigenfunctions are exponentially localized. The novelty is that the electrostatic and magnetic vector potentials as well as a non-local exchange potential are included in the projection determining the model. As a main technical tool we derive various commutator estimates involving spectral projections of Dirac operators with external fields. Our results apply to all nuclear charges less than or equal to 137.

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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