Limits on weak magnetic confinement of neutral atoms

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C. A. Sackett
Physics Department, University of Virginia, Charlottesville, Virginia 22904, USA

Received 1 November 2005; published 26 January 2006

Itis shown that when a magnetic field is used tosupport neutral atoms against the gravitational force mg, the totalcurvature of the field magnitude B must be larger thanm²g²/(2µ²B), where µ is the magnetic moment of the atoms.This limits the minimum confinement strength obtainable for a trappedatomic gas. It is also conjectured that the curvature mustbe larger than twice this value for a magnetic potentialthat varies in only one or two dimensions, such asan atomic waveguide.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.73.013626
DOI:	10.1103/PhysRevA.73.013626
PACS:	03.75.Be; 41.20.Gz; 39.20.+q 03.75.Be Atom and neutron optics 41.20.Gz Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems 39.20.+q Atom interferometry techniques YEAR: 2006
KEYWORDS:	atom optics, radiation pressure, quantum optics, magnetic moments, atomic moments, magnetic traps

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