Distribution of Resonant Eigenvalues of Quantum Potential Scattering

Details Distribution of Resonant Eigenvalues of Quantum Potential Scattering Distribution of Resonant Eigenvalues of Quantum Potential Scattering

2009-09-14

arxiv.org/abs/0909.2463v1

Physics

Quantum Physics

23 pages, 5 figures

Scientific paper

We formulate the Born approximation for finding resonance poles in the complex plane for potential scattering problems. Using the method, we study the distribution of resonance poles for several scattering potentials. In particular, we find for an exponential potential with a cutoff that the cutoff generates an infinite series of extra resonance poles below and along the real axis, which would not exist without the cutoff. We also find for a Gaussian potential that the series of resonance poles approach the imaginary axis of the complex energy plane from left. In other words, the real parts of the resonant eigenenergis are all negative.

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