dorsal/arxiv
View SchemaUnitary Evolution Between Pure and Mixed States
| Authors | B. Reznik |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9504019 |
| URL | https://arxiv.org/abs/quant-ph/9504019 |
| DOI | 10.1103/PhysRevLett.76.1192 |
| Journal | Phys.Rev.Lett. 76 (1996) 1192-1195 |
Abstract
We propose an extended quantum mechanical formalism that is based on a wave operator $\vr$, which is related to the ordinary density matrix via $\rho=\vr\vr^\dagger$. This formalism allows a (generalized) unitary evolution between pure and mixed states. It also preserves much of the connection between symmetries and conservation laws. The new formalism is illustrated for the case of a two level system.
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"abstract": "We propose an extended quantum mechanical formalism that is based on a wave\noperator $\\vr$, which is related to the ordinary density matrix via\n$\\rho=\\vr\\vr^\\dagger$. This formalism allows a (generalized) unitary evolution\nbetween pure and mixed states. It also preserves much of the connection between\nsymmetries and conservation laws. The new formalism is illustrated for the case\nof a two level system.",
"arxiv_id": "quant-ph/9504019",
"authors": [
"B. Reznik"
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"doi": "10.1103/PhysRevLett.76.1192",
"journal_ref": "Phys.Rev.Lett. 76 (1996) 1192-1195",
"title": "Unitary Evolution Between Pure and Mixed States",
"url": "https://arxiv.org/abs/quant-ph/9504019"
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