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18 papers · 1 filter
A new PT symmetric complex Hamiltonian with a real spectra
B. Bagchi, R. Roychoudhury
We construct an isospectrum systems in terms of a real and complex potential to show that the underlying PT symmetric Hamiltonian possesses a real spectrum which is shared by its r…
Motion of a spin 1/2 particle in shape invariant scalar and magnetic fields
V. M. Tkachuk, P. Roy
We study the motion of a spin 1/2 particle in a scalar as well as a magnetic field within the framework of supersymmetric quantum mechanics(SUSYQM). We also introduce the concept o…
Spectra of Anderson type models with decaying randomness
M. Krishna, K. B. Sinha
In this paper we consider some Anderson type models, with decaying randomness and the free parts having long range tails. The randomness may decay at different rates in different d…
SWKB Quantization Rules for Bound States in Quantum Wells
Anjana Sinha, Rajkumar Roychoudhury
In a recent paper by Gomes and Adhikari (J.Phys B30 5987(1997)) a matrix formulation of the Bohr-Sommerfield quantization rule has been applied to the study of bound states in one…
WKB and MAF Quantization Rules for Spatially Confined Quantum Mechanical Systems
A. Sinha, R. Roychoudhury
A formalism is developed to obtain the energy eigenvalues of spatially confined quantum mechanical systems in the framework of The usual WKB and MAF methods. The technique is appli…
Time dependent nonclassical properties of even and odd nonlinear coherent states
B. Roy, P. Roy
We construct even and odd nonlinear coherent states of a parametric oscillator and examine their nonclassical properties.It has been shown that these superpositions exhibit squeezi…