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Non-catastrophic resonant states in one dimensional scattering from a rising exponential potential

arXiv
Authors: Zafar Ahmed, Lakshmi Prakash, Shashin Pavaskar

Year

2014

Paper ID

48118

Status

Preprint

Abstract Read

~2 min

Abstract Words

107

Citations

N/A

Abstract

Investigation of scattering from rising potentials has just begun, these unorthodox potentials have earlier gone unexplored. Here, we obtain reflection amplitude (r(E)) for scattering from a two-piece rising exponential potential: V\(xle 0\)=V1\[1-e-2x/a\], V(x > 0)=V2\[e2x/b-1\], where V1,2>0. This potential is repulsive and rising for x>0; it is attractive and diverging to $-infty$ for x<0. The complex energy poles ${cal E}n= En-iΓn/2, Γn>0$ of r(E) manifest as resonances. Wigner's reflection time-delay displays peaks at energies E\(approx En\) but the eigenstates do not show spatial catastrophe for E={cal E}n.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2014 reference point for readers tracking recent quantum research.
  • Investigation of scattering from rising potentials has just begun, these unorthodox potentials have earlier gone unexplored.

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