Quantum phase transition in space in a ferromagnetic spin-1 Bose-Einstein condensate

Details Quantum phase transition in space in a ferromagnetic spin-1 Bose-Einstein condensate Quantum phase transition in space in a ferromagnetic spin-1 Bose-Einstein condensate

2008-09-17

arxiv.org/abs/0809.2877v2

New J. Phys. 11, 063014 (2009)

Physics

Condensed Matter

Statistical Mechanics

8 pages & 2 figures, to appear in NJP, lots of tiny improvements, more references, explicit derivation of the divergent healin

Scientific paper

A quantum phase transition between the symmetric (polar) phase and the phase with broken symmetry can be induced in a ferromagnetic spin-1 Bose-Einstein condensate in space (rather than in time). We consider such a phase transition and show that the transition region in the vicinity of the critical point exhibits scalings that reflect a compromise between the rate at which the transition is imposed (i.e., the gradient of the control parameter) and the scaling of the divergent healing length in the critical region. Our results suggest a method for the direct measurement of the scaling exponent nu.

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