dorsal/arxiv
View SchemaTime Scale and Completely Positive Dynamical Evolutions
| Authors | B. Vacchini |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0211128 |
| URL | https://arxiv.org/abs/quant-ph/0211128 |
| Journal | The foundations of quantum mechanics - historical analysis and open questions, C. Garola and A. Rossi eds., p. 407-418, World Scientific, Singapore 2000 |
Abstract
It is argued that in the description of macroscopic systems inside quantum mechanics the study of the dynamics of selected degrees of freedom slowly varying on a suitable time scale, corresponding to relevant observables for the given reduced description, is particularly meaningful. A formalism developing these ideas in the more simple case of a microsystem interacting with a macroscopic system is briefly outlined, together with an application to the field of neutron optics. The obtained reduced description relies on a T-matrix formalism and has the property of complete positivity.
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"abstract": "It is argued that in the description of macroscopic systems inside quantum\nmechanics the study of the dynamics of selected degrees of freedom slowly\nvarying on a suitable time scale, corresponding to relevant observables for the\ngiven reduced description, is particularly meaningful. A formalism developing\nthese ideas in the more simple case of a microsystem interacting with a\nmacroscopic system is briefly outlined, together with an application to the\nfield of neutron optics. The obtained reduced description relies on a T-matrix\nformalism and has the property of complete positivity.",
"arxiv_id": "quant-ph/0211128",
"authors": [
"B. Vacchini"
],
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"quant-ph"
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"journal_ref": "The foundations of quantum mechanics - historical analysis and\n open questions, C. Garola and A. Rossi eds., p. 407-418, World Scientific,\n Singapore 2000",
"title": "Time Scale and Completely Positive Dynamical Evolutions",
"url": "https://arxiv.org/abs/quant-ph/0211128"
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