Gauge-Away Effect in Cold Gases on Optical Lattices

Details Gauge-Away Effect in Cold Gases on Optical Lattices Gauge-Away Effect in Cold Gases on Optical Lattices

2009-09-22

arxiv.org/abs/0909.3937v2

Physics

Condensed Matter

Quantum Gases

4 pages, 2 figures, revtex style; v2 typos corrected, submitted to PRL

Scientific paper

It is shown that a simple modification of the geometry in which Raman lasers are applied to a cold gas in an optical lattice results in transforming the emerging effective electromagnetic field into a pure gauge. This contrived gauge-away effect can be observed experimentally by measuring the Mott-Insulator to Superfluid critical point. The underlying mechanism for this phenomenon is the ability to engineer the transfer of the transverse component of the gauge potential into its longitudinal one.

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