dorsal/arxiv
View SchemaQuasi-exactly solvable quartic Bose Hamiltonians
| Authors | S. N. Dolya, O. B. Zaslavskii |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0106134 |
| URL | https://arxiv.org/abs/quant-ph/0106134 |
| DOI | 10.1088/0305-4470/34/30/307 |
| Journal | J.Phys.A34:5955-5968,2001 |
Abstract
We consider Hamiltonians, which are even polynomials of the forth order with the respect to Bose operators. We find subspaces, preserved by the action of Hamiltonian These subspaces, being finite-dimensional, include, nonetheless, states with an \QTR{it}{infinite} number of quasi-particles, corresponding to the original Bose operators. The basis functions look rather simple in the coherent state representation and are expressed in terms of the degenerate hypergeometric function with respect to the complex variable labeling the representation. In some particular degenerate cases they turn (up to the power factor) into the trigonometric or hyperbolic functions, Bessel functions or combinations of the exponent and Hermit polynomials. We find explicitly the relationship between coefficients at different powers of Bose operators that ensure quasi-exact solvability of Hamiltonian.
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"abstract": "We consider Hamiltonians, which are even polynomials of the forth order with\nthe respect to Bose operators. We find subspaces, preserved by the action of\nHamiltonian These subspaces, being finite-dimensional, include, nonetheless,\nstates with an \\QTR{it}{infinite} number of quasi-particles, corresponding to\nthe original Bose operators. The basis functions look rather simple in the\ncoherent state representation and are expressed in terms of the degenerate\nhypergeometric function with respect to the complex variable labeling the\nrepresentation. In some particular degenerate cases they turn (up to the power\nfactor) into the trigonometric or hyperbolic functions, Bessel functions or\ncombinations of the exponent and Hermit polynomials. We find explicitly the\nrelationship between coefficients at different powers of Bose operators that\nensure quasi-exact solvability of Hamiltonian.",
"arxiv_id": "quant-ph/0106134",
"authors": [
"S. N. Dolya",
"O. B. Zaslavskii"
],
"categories": [
"quant-ph",
"hep-th",
"math-ph",
"math.MP"
],
"doi": "10.1088/0305-4470/34/30/307",
"journal_ref": "J.Phys.A34:5955-5968,2001",
"title": "Quasi-exactly solvable quartic Bose Hamiltonians",
"url": "https://arxiv.org/abs/quant-ph/0106134"
},
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