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arXiv math-ph/0412018math-phmath.APmath.MP
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一类广义Dirac-Fock型发展方程整体时间解的存在性

Existence of global-in-time solutions to a generalized Dirac-Fock type evolution equation

Christian Hainzl, Mathieu Lewin, Christof Sparber

摘要:

本文考虑一个由无光子量子电动力学导出的广义Dirac Fock型演化方程,它描述了相对论电子、可观测电子以及充满Dirac海的电子的自洽时间演化。这个方程最初是由狄拉克在1934年以简化的形式提出的。由于我们在Hartree-Fock型近似下工作,描述电子物理状态的元素是无限秩投影器。使用由Chaix-Iracane({ \it J. Phys. B.})引入的Bogoliubov-Dirac-Fock形式,22,3791- 3814,1989),最近由Hainzl-Lewin-Sere建立,我们证明了所考虑的发展方程的整体时间解的存在性。

英文摘要:

We consider a generalized Dirac-Fock type evolution equation deduced from no-photon Quantum Electrodynamics, which describes the self-consistent time-evolution of relativistic electrons, the observable ones as well as those filling up the Dirac sea. This equation has been originally introduced by Dirac in 1934 in a simplified form. Since we work in a Hartree-Fock type approximation, the elements describing the physical state of the electrons are infinite rank projectors. Using the Bogoliubov-Dirac-Fock formalism, introduced by Chaix-Iracane ({\it J. Phys. B.}, 22, 3791--3814, 1989), and recently established by Hainzl-Lewin-Sere, we prove the existence of global-in-time solutions of the considered evolution equation.

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