dorsal/arxiv
View SchemaEnvironment-Induced Decoherence and the Transition From Quantum to Classical
| Authors | Juan Pablo Paz, Wojciech Hubert Zurek |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0010011 |
| URL | https://arxiv.org/abs/quant-ph/0010011 |
| DOI | 10.1007/3-540-45338-5_8 |
Abstract
We study dynamics of quantum open systems, paying special attention to those aspects of their evolution which are relevant to the transition from quantum to classical. We begin with a discussion of the conditional dynamics of simple systems. The resulting models are straightforward but suffice to illustrate basic physical ideas behind quantum measurements and decoherence. To discuss decoherence and environment-induced superselection einselection in a more general setting, we sketch perturbative as well as exact derivations of several master equations valid for various systems. Using these equations we study einselection employing the general strategy of the predictability sieve. Assumptions that are usually made in the discussion of decoherence are critically reexamined along with the ``standard lore'' to which they lead. Restoration of quantum-classical correspondence in systems that are classically chaotic is discussed. The dynamical second law -it is shown- can be traced to the same phenomena that allow for the restoration of the correspondence principle in decohering chaotic systems (where it is otherwise lost on a very short time-scale). Quantum error correction is discussed as an example of an anti-decoherence strategy. Implications of decoherence and einselection for the interpretation of quantum theory are briefly pointed out.
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"abstract": "We study dynamics of quantum open systems, paying special attention to those\naspects of their evolution which are relevant to the transition from quantum to\nclassical. We begin with a discussion of the conditional dynamics of simple\nsystems. The resulting models are straightforward but suffice to illustrate\nbasic physical ideas behind quantum measurements and decoherence. To discuss\ndecoherence and environment-induced superselection einselection in a more\ngeneral setting, we sketch perturbative as well as exact derivations of several\nmaster equations valid for various systems. Using these equations we study\neinselection employing the general strategy of the predictability sieve.\nAssumptions that are usually made in the discussion of decoherence are\ncritically reexamined along with the ``standard lore\u0027\u0027 to which they lead.\nRestoration of quantum-classical correspondence in systems that are classically\nchaotic is discussed. The dynamical second law -it is shown- can be traced to\nthe same phenomena that allow for the restoration of the correspondence\nprinciple in decohering chaotic systems (where it is otherwise lost on a very\nshort time-scale). Quantum error correction is discussed as an example of an\nanti-decoherence strategy. Implications of decoherence and einselection for the\ninterpretation of quantum theory are briefly pointed out.",
"arxiv_id": "quant-ph/0010011",
"authors": [
"Juan Pablo Paz",
"Wojciech Hubert Zurek"
],
"categories": [
"quant-ph"
],
"doi": "10.1007/3-540-45338-5_8",
"title": "Environment-Induced Decoherence and the Transition From Quantum to Classical",
"url": "https://arxiv.org/abs/quant-ph/0010011"
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