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arXiv 2109.07516hep-thmath-phmath.MP
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精确量子化与解析延拓

Exact quantization and analytic continuation

Barak Gabai, Xi Yin

摘要:

本文基于Wronskian关系,给出了具有一般多项式势的一维薛定谔问题量子周期的精确量子化条件(EQC)的一个简化推导.我们进一步推广EQC的潜力与一个定期的奇异性,描述球对称量子力学系统在一个给定的角动量部门。我们表明,热力学贝特anomies(TBA)方程,管理的量子周期进行非平凡monodromies角动量解析连续整数值之间的复杂平面。TBA方程与EQC一起进行了数值检查,以对抗在实角动量和耦合下的哈密顿截断,并用于探索复角动量平面上的频谱的解析延拓。

英文摘要:

In this paper we give a streamlined derivation of the exact quantization condition (EQC) on the quantum periods of the Schrödinger problem in one dimension with a general polynomial potential, based on Wronskian relations. We further generalize the EQC to potentials with a regular singularity, describing spherical symmetric quantum mechanical systems in a given angular momentum sector. We show that the thermodynamic Bethe ansatz (TBA) equations that govern the quantum periods undergo nontrivial monodromies as the angular momentum is analytically continued between integer values in the complex plane. The TBA equations together with the EQC are checked numerically against Hamiltonian truncation at real angular momenta and couplings, and are used to explore the analytic continuation of the spectrum on the complex angular momentum plane in examples.

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