dorsal/arxiv
View SchemaGeneralized Deformed Commutation Relations with Nonzero Minimal Uncertainties in Position and/or Momentum and Applications to Quantum Mechanics
| Authors | Christiane Quesne, Volodymyr M. Tkachuk |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603077 |
| URL | https://arxiv.org/abs/quant-ph/0603077 |
| DOI | 10.3842/SIGMA.2007.016 |
| Journal | SIGMA 3:016,2007 |
Abstract
Two generalizations of Kempf's quadratic canonical commutation relation in one dimension are considered. The first one is the most general quadratic commutation relation. The corresponding nonzero minimal uncertainties in position and momentum are determined and the effect on the energy spectrum and eigenfunctions of the harmonic oscillator in an electric field is studied. The second extension is a function-dependent generalization of the simplest quadratic commutation relation with only a nonzero minimal uncertainty in position. Such an uncertainty now becomes dependent on the average position. With each function-dependent commutation relation we associate a family of potentials whose spectrum can be exactly determined through supersymmetric quantum mechanical and shape invariance techniques. Some representations of the generalized Heisenberg algebras are proposed in terms of conventional position and momentum operators $x$, $p$. The resulting Hamiltonians contain a contribution proportional to $p^4$ and their $p$-dependent terms may also be functions of $x$. The theory is illustrated by considering P\"oschl-Teller and Morse potentials.
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"abstract": "Two generalizations of Kempf\u0027s quadratic canonical commutation relation in\none dimension are considered. The first one is the most general quadratic\ncommutation relation. The corresponding nonzero minimal uncertainties in\nposition and momentum are determined and the effect on the energy spectrum and\neigenfunctions of the harmonic oscillator in an electric field is studied. The\nsecond extension is a function-dependent generalization of the simplest\nquadratic commutation relation with only a nonzero minimal uncertainty in\nposition. Such an uncertainty now becomes dependent on the average position.\nWith each function-dependent commutation relation we associate a family of\npotentials whose spectrum can be exactly determined through supersymmetric\nquantum mechanical and shape invariance techniques. Some representations of the\ngeneralized Heisenberg algebras are proposed in terms of conventional position\nand momentum operators $x$, $p$. The resulting Hamiltonians contain a\ncontribution proportional to $p^4$ and their $p$-dependent terms may also be\nfunctions of $x$. The theory is illustrated by considering P\\\"oschl-Teller and\nMorse potentials.",
"arxiv_id": "quant-ph/0603077",
"authors": [
"Christiane Quesne",
"Volodymyr M. Tkachuk"
],
"categories": [
"quant-ph",
"hep-th",
"math-ph",
"math.MP",
"math.QA"
],
"doi": "10.3842/SIGMA.2007.016",
"journal_ref": "SIGMA 3:016,2007",
"title": "Generalized Deformed Commutation Relations with Nonzero Minimal Uncertainties in Position and/or Momentum and Applications to Quantum Mechanics",
"url": "https://arxiv.org/abs/quant-ph/0603077"
},
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