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arXiv 1005.3633math-phhep-thmath.MP
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PT对称算符与一维相对论振子的亚稳态

PT-symmetric operators and metastable states of the 1D relativistic oscillators

Riccardo Giachetti, Vincenzo Grecchi

摘要:

我们考虑一维谐振子的Dirac方程和相应的二阶分离算子,通过复伸缩给出问题的共振。相同的运营商有独特的扩展作为封闭PT对称运营商定义无限的正能级收敛到薛定谔的c趋于无穷大。这样的能级和它们的本征函数直接给出了问题的亚稳态的确定选择。精确的数值计算表明,这些水平与共振的位置一致的宽度的顺序。对于Klein-Gordon振子也得到了类似的结果,在这种情况下,动力学的数目是无限的,PT对称算子的本征值和本征向量给出了每个动力学的亚稳态.

英文摘要:

We consider the one-dimensional Dirac equation for the harmonic oscillator and the associated second order separated operators giving the resonances of the problem by complex dilation. The same operators have unique extensions as closed PT-symmetric operators defining infinite positive energy levels converging to the Schroedinger ones as c tends to infinity. Such energy levels and their eigenfunctions give directly a definite choice of metastable states of the problem. Precise numerical computations shows that these levels coincide with the positions of the resonances up to the order of the width. Similar results are found for the Klein-Gordon oscillators, and in this case there is an infinite number of dynamics and the eigenvalues and eigenvectors of the PT-symmetric operators give metastable states for each dynamics.

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