dorsal/arxiv
View SchemaBerry's Phase in the Presence of a Dissipative Medium
| Authors | K. M. Fonseca Romero, A. C. Aguiar Pinto, M. T. Thomaz |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0003049 |
| URL | https://arxiv.org/abs/quant-ph/0003049 |
| DOI | 10.1016/S0378-4371(01)00589-1 |
| Journal | Physica {\bf A307} (2002) 142 |
Abstract
We consider the spin 1/2 model coupled to a slowly varying magnetic field in the presence of a weak damping represented by a Lindblad-form operators. We show that Berry's geometrical phase remains unaltered by the two dissipation mechanism considered. Dissipation effects are twofold: a shrinking in the modulus of the Bloch's vector, which characterizes coherence loss and a time dependent (dissipation related) precession angle. We show that the line broadening of the Fourier transformation of the components of magnetization is only due to the presence of dissipation.
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"abstract": "We consider the spin 1/2 model coupled to a slowly varying magnetic field in\nthe presence of a weak damping represented by a Lindblad-form operators. We\nshow that Berry\u0027s geometrical phase remains unaltered by the two dissipation\nmechanism considered. Dissipation effects are twofold: a shrinking in the\nmodulus of the Bloch\u0027s vector, which characterizes coherence loss and a time\ndependent (dissipation related) precession angle. We show that the line\nbroadening of the Fourier transformation of the components of magnetization is\nonly due to the presence of dissipation.",
"arxiv_id": "quant-ph/0003049",
"authors": [
"K. M. Fonseca Romero",
"A. C. Aguiar Pinto",
"M. T. Thomaz"
],
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"quant-ph"
],
"doi": "10.1016/S0378-4371(01)00589-1",
"journal_ref": "Physica {\\bf A307} (2002) 142",
"title": "Berry\u0027s Phase in the Presence of a Dissipative Medium",
"url": "https://arxiv.org/abs/quant-ph/0003049"
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