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arXiv quant-ph/0612220quant-ph
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相空间中的半经典Scar函数

Semi-classical Scar functions in phase space

Alejandro M. F. Rivas

摘要:

在二维混沌系统的经典不稳定周期轨道附近,我们发展了Weyl-Wigner表示中疤痕函数的半经典近似。双曲条纹的预测,渐近的稳定和不稳定的流形,计算验证(线性)猫映射,理论是适应离散相空间适合量化环面后。特征条纹图案可以区分,甚至准能量的固定点不是玻尔量子化。此外,图案是高度本地化的附近的周期轨道,并沿着其稳定和不稳定的流形没有任何长距离的模式,出现的情况下的频谱维格纳函数。

英文摘要:

We develop a semi-classical approximation for the scar function in the Weyl-Wigner representation in the neighborhood of a classically unstable periodic orbit of chaotic two dimensional systems. The prediction of hyperbolic fringes, asymptotic to the stable and unstable manifolds, is verified computationally for a (linear) cat map, after the theory is adapted to a discrete phase space appropriate to a quantized torus. Characteristic fringe patterns can be distinguished even for quasi-energies where the fixed point is not Bohr-quantized. Also the patterns are highly localized in the neighborhood of the periodic orbit and along its stable and unstable manifolds without any long distance patterns that appears for the case of the spectral Wigner function.

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