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Title: Symmetry breaking in small rotating clouds of trapped ultracold Bose atoms
Author: Dagnino, D.
Barberán Falcón, Núria
Osterloh, Klaus
Riera, A.
Lewenstein, Maciej
Keywords: Simetria (Física)
Estadística quàntica
Mecànica estadística
Symmetry (Physics)
Quantum statistics
Statistical mechanics
Issue Date: 2007
Publisher: The American Physical Society
Abstract: We study the signatures of rotational and phase symmetry breaking in small rotating clouds of trapped ultracold Bose atoms by looking at rigorously defined condensate wave function. Rotational symmetry breaking occurs in narrow frequency windows, where energy degeneracy between the lowest energy states of different total angular momentum takes place. This leads to a complex condensate wave function that exhibits vortices clearly seen as holes in the density, as well as characteristic local phase patterns, reflecting the appearance of vorticities. Phase symmetry (or gauge symmetry) breaking, on the other hand, is clearly manifested in the interference of two independent rotating clouds.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 2007, vol. 76, núm. 1, p. 013625.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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