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arXiv math-ph/0611013math-phmath.MPmath.SP
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非相对论性QED标准模型的谱理论

Spectral Theory for the Standard Model of Non-Relativistic QED

J. Froehlich, M. Griesemer, I. M. Sigal

摘要:

对于由静态核和非相对论电子耦合到量子化辐射场的原子和分子模型(非相对论QED的标准模型),我们证明了Mourre估计和在基态能量附近的限制吸收原理。作为推论,我们得到的光子动力学的本地衰减估计,我们证明了(激发)本征值和绝对连续性的基态能量附近的能谱,在以前的调查不理解的频谱区域的情况下。我们的估计中的共轭算子是Fock空间上的共轭的第二量子化生成元。

英文摘要:

For a model of atoms and molecules made from static nuclei and non-relativistic electrons coupled to the quantized radiation field (the standard model of non-relativistic QED), we prove a Mourre estimate and a limiting absorption principle in a neighborhood of the ground state energy. As corollaries we derive local decay estimates for the photon dynamics, and we prove absence of (excited) eigenvalues and absolute continuity of the energy spectrum near the ground state energy, a region of the spectrum not understood in previous investigations. The conjugate operator in our Mourre estimate is the second quantized generator of dilatations on Fock space.

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