RESONANT STATES IN A ONE-DIMENSIONAL QUANTUM SYSTEM

  • A. Tanimu
  • I. M. Bagudo
Keywords: : Boundary conditions, Eigenstates, Complex solution, Schrödinger’s equation, MATLAB

Abstract

In this work, the concept of resonant states (RSs) in a finite square quantum well is presented. We first derive the analytic secular transcendental equations for even and odd states by applying the outgoing wave boundary conditions into the one-dimensional Schrödinger’s wave equation. The complex solution of these equations is found using the numerical Newton-Raphson method implemented in MATLAB. We can see in particular, that the RSs present a general class of Eigenstates, which includes bound states, anti-bound states, and normal RSs.

References

Andrew De la Bastide (2010-2011). Resonant state expansion Applied to 1-D Schrodinger Equation. Year 4 Physics report, Cardiff University, UK.

Armitage, L. J., Doost, M. B., Langbein, W., &Muljarov, E. A. (2014).Resonant states expansion applied to planar waveguides.Phys.Rev. A 89, 053832.

Doost, M. B., Langbein, W., &Muljarov, E. A. (2012).Resonant states expansion applied to planar open optical systems.Phys. Rev. A 85, 023835.

Gamow, G. (1928). Zurquantentheorie des atomkernes. Zeitschrift fur physic. 51, 204-212.

Hatano, N. (2008). Some Properties of the Resonant State in Quantum Mechanics and its Computation. Prog. Theor. Phys.119, 187.

Mandle, F. (1992). Quantum Mechanics (1st Edition), Wiley, 50010.

Muljarov E. A., Langbein, W. & Zimmermann, R. (2010). Brillouin-WignerPerturbation theory in open electromagnetic systems. Europhys. Lett. 92, 5.

Siegert, A. J. F. (1939). On the Derivation of the Dispersion Formula forNuclear Reactions. PhysicalReview 56, 750-752.

Tanimu, A., &Muljarov E. A. (2018). Resonant states expansion applied to one dimensional quantum systems. Physical review A. 98, 022127.

Tanimu, A., &Muljarov, E. A. (2018). Resonant states in double and triple quantum wells.J. Phys. Commun. 2, 115008.

Uma, A.,Mashewari, &Prema, P. (2010). Resonant states and transmission coefficient oscillations for potential wells and barriers. Am. J. Phys. 78, 412.

Published
2020-09-23
How to Cite
TanimuA., & BagudoI. M. (2020). RESONANT STATES IN A ONE-DIMENSIONAL QUANTUM SYSTEM. FUDMA JOURNAL OF SCIENCES, 4(3), 300 - 304. https://doi.org/10.33003/fjs-2020-0403-394