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arXiv 1306.6387quant-phcond-mat.mes-hall
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圆锥交叉点附近动力学中的几何相位效应:对称性破缺和空间局部化

Geometric phase effects in dynamics near conical intersections: Symmetry breaking and spatial localization

Ilya G. Ryabinkin, Artur F. Izmaylov

摘要:

我们证明了具有圆锥相交的有限系统可以表现出自发对称性破缺,这表现在本征态的空间局域化上。这种定位具有几何相位原点,并且对模型参数的变化具有鲁棒性。定域和离域本征态区域之间的转变类似于连续的相变。局域化减慢了零温和低温下的低能量子核动力学。

英文摘要:

We show that finite systems with conical intersections can exhibit spontaneous symmetry breaking which manifests itself in spatial localization of eigenstates. This localization has a geometric phase origin and is robust against variation of model parameters. The transition between localized and delocalized eigenstate regimes resembles a continuous phase transition. The localization slows down the low-energy quantum nuclear dynamics at zero and low temperatures.

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