dorsal/arxiv
View SchemaVon Neumann equations with time-dependent Hamiltonians and supersymmetric quantum mechanics
| Authors | Marek Czachor, Heinz-Dietrich Doebner, Monika Syty, Krzysztof Wasylka |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9907059 |
| URL | https://arxiv.org/abs/quant-ph/9907059 |
| DOI | 10.1103/PhysRevE.61.3325 |
| Journal | Phys.Rev.E61:3325-3329,2000 |
Abstract
Starting with a time-independent Hamiltonian $h$ and an appropriately chosen solution of the von Neumann equation $i\dot\rho(t)=[ h,\rho(t)]$ we construct its binary-Darboux partner $h_1(t)$ and an exact scattering solution of $i\dot\rho_1(t)=[h_1(t),\rho_1(t)]$ where $h_1(t)$ is time-dependent and not isospectral to $h$. The method is analogous to supersymmetric quantum mechanics but is based on a different version of a Darboux transformation. We illustrate the technique by the example where $h$ corresponds to a 1-D harmonic oscillator. The resulting $h_1(t)$ represents a scattering of a soliton-like pulse on a three-level system.
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"abstract": "Starting with a time-independent Hamiltonian $h$ and an appropriately chosen\nsolution of the von Neumann equation $i\\dot\\rho(t)=[ h,\\rho(t)]$ we construct\nits binary-Darboux partner $h_1(t)$ and an exact scattering solution of\n$i\\dot\\rho_1(t)=[h_1(t),\\rho_1(t)]$ where $h_1(t)$ is time-dependent and not\nisospectral to $h$. The method is analogous to supersymmetric quantum mechanics\nbut is based on a different version of a Darboux transformation. We illustrate\nthe technique by the example where $h$ corresponds to a 1-D harmonic\noscillator. The resulting $h_1(t)$ represents a scattering of a soliton-like\npulse on a three-level system.",
"arxiv_id": "quant-ph/9907059",
"authors": [
"Marek Czachor",
"Heinz-Dietrich Doebner",
"Monika Syty",
"Krzysztof Wasylka"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevE.61.3325",
"journal_ref": "Phys.Rev.E61:3325-3329,2000",
"title": "Von Neumann equations with time-dependent Hamiltonians and supersymmetric quantum mechanics",
"url": "https://arxiv.org/abs/quant-ph/9907059"
},
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