Barut-Girardello Coherent States for Nonlinear Oscillator with Position-Dependent Mass |
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Authors: | Naila Amir Shahid Iqbal |
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Institution: | 1.School of Electrical Engineering and Computer Sciences, National University of Sciences and Technology, H-12, Islamabad, Pakistan;2.School of Natural Sciences, National University of Sciences and Technology, H-12, Islamabad, Pakistan |
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Abstract: | Using ladder operators for the non-linear oscillator with position-dependent effective mass, realization of the dynamic group SU(1,1) is presented. Keeping in view the algebraic structure of the non-linear oscillator, coherent states are constructed using Barut-Girardello formalism and their basic properties are discussed. Furthermore, the statistical properties of these states are investigated by means of Mandel parameter and second order correlation function. Moreover, it is shown that in the harmonic limit, all the results obtained for the non-linear oscillator with spatially varying mass reduce to corresponding results of the linear oscillator with constant mass. |
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Keywords: | position-dependent mass nonlinear oscillator Schödinger factorization Ladder operators su(1 1) algebra Barut-Girardello coherent states sub-poissonian statistics |
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