dorsal/arxiv
View SchemaEffects of random localizing events on matter waves: formalism and examples
| Authors | Julio Gea-Banacloche |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0508134 |
| URL | https://arxiv.org/abs/quant-ph/0508134 |
| DOI | 10.1088/0953-4075/39/1/008 |
Abstract
A formalism is introduced to describe a number of physical processes that may break down the coherence of a matter wave over a characteristic length scale l. In a second-quantized description, an appropriate master equation for a set of bosonic "modes" (such as atoms in a lattice, in a tight-binding approximation) is derived. Two kinds of "localizing processes" are discussed in some detail and shown to lead to master equations of this general form: spontaneous emission (more precisely, light scattering), and modulation by external random potentials. Some of the dynamical consequences of these processes are considered: in particular, it is shown that they generically lead to a damping of the motion of the matter-wave currents, and may also cause a "flattening" of the density distribution of a trapped condensate at rest.
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"abstract": "A formalism is introduced to describe a number of physical processes that may\nbreak down the coherence of a matter wave over a characteristic length scale l.\nIn a second-quantized description, an appropriate master equation for a set of\nbosonic \"modes\" (such as atoms in a lattice, in a tight-binding approximation)\nis derived. Two kinds of \"localizing processes\" are discussed in some detail\nand shown to lead to master equations of this general form: spontaneous\nemission (more precisely, light scattering), and modulation by external random\npotentials. Some of the dynamical consequences of these processes are\nconsidered: in particular, it is shown that they generically lead to a damping\nof the motion of the matter-wave currents, and may also cause a \"flattening\" of\nthe density distribution of a trapped condensate at rest.",
"arxiv_id": "quant-ph/0508134",
"authors": [
"Julio Gea-Banacloche"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/0953-4075/39/1/008",
"title": "Effects of random localizing events on matter waves: formalism and examples",
"url": "https://arxiv.org/abs/quant-ph/0508134"
},
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