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arXiv:1306.0197 · Journal of Physics A Mathematical and Theoretical

New $\mathcal {SU}(1,1)$ position-dependent effective mass coherent states for a generalized shifted harmonic oscillator

Sid-Ahmed Yahiaoui, M. Bentaïba

Published Dec 17, 2013• 11 citations
arXivHTMLPDF

Abstract

A new position-dependent effective mass coherent states (PDEM CS) related to the shifted harmonic oscillator (SHO) are deduced. This is accomplished by applying a similarity transformation to the generally deformed oscillator algebra (GDOA) generators for PDEM systems and a new set of operators that close the Lie algebra are constructed, being the PDEM CS of the basis for its unitary irreducible representation. From the Lie algebra generators, we evaluate the uncertainty relationship for a position and momentum-like operators in the PDEM CS and show that it is minimized in the sense of Barut–Girardello CS. We prove that the deduced PDEM CS preserve the same analytical form than those of Glauber states. As an illustration of our procedure, we depicted the 2D-probability density in the PDEM CS for SHO with the explicit form of the mass distribution with no singularities.

DOI
10.1088/1751-8113/47/2/025301

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