Number fluctuations of cold, spatially split bosonic objects

Kaspar Sakmann; Alexej I. Streltsov; Ofir E. Alon; Lorenz S. Cederbaum

doi:10.1103/PhysRevA.84.053622

Number fluctuations of cold, spatially split bosonic objects

Kaspar Sakmann, Alexej I. Streltsov, Ofir E. Alon, Lorenz S. Cederbaum

Department of Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the number fluctuations of spatially split many-boson systems employing a theorem about the maximally and minimally attainable variances of an observable. The number fluctuations of many-boson systems are given for different numbers of lattice sites and both mean-field and many-body wave functions. It is shown which states maximize the particle number fluctuations, both in lattices and double wells. The fragmentation of the states is discussed, and it is shown that the number fluctuations of some fragmented states are identical to those of fully condensed states.

Original language	English
Article number	053622
Number of pages	6
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	84
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.84.053622
State	Published - 18 Nov 2011

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.84.053622

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AB - We investigate the number fluctuations of spatially split many-boson systems employing a theorem about the maximally and minimally attainable variances of an observable. The number fluctuations of many-boson systems are given for different numbers of lattice sites and both mean-field and many-body wave functions. It is shown which states maximize the particle number fluctuations, both in lattices and double wells. The fragmentation of the states is discussed, and it is shown that the number fluctuations of some fragmented states are identical to those of fully condensed states.

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Number fluctuations of cold, spatially split bosonic objects

Abstract

ASJC Scopus subject areas

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