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Self-intersecting Regge trajectories in multi-channel scattering |
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| Authors: | D Sokolovski Z FelfliAZ Msezane |
| Institution: | a Department of Chemical Physics, University of the Basque Country, Leioa, Spain b IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain c Department of Physics and Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USA |
| Abstract: | We present a simple direct method for calculating Regge trajectories for a multichannel scattering problem. The approach is applied to the case of two coupled Thomas-Fermi type potentials, used as a crude model for electron-atom scattering below the second excitation threshold. It is shown that non-adiabatic interaction may cause formation of loops in Regge trajectories. The accuracy of the method is tested by evaluating resonance contributions to elastic and inelastic integral cross sections. |
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