Bloch Oscillations in a One-Dimensional Spinor Gas

Journal Article · Fri Feb 20 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.070402· OSTI ID:21180212

Gangardt, D M ^[1]; Kamenev, A ^[2]

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1. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom)
2. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

A force applied to a spin-flipped particle in a one-dimensional spinor gas may lead to Bloch oscillations of the particle's position and velocity. The existence of Bloch oscillations crucially depends on the viscous friction force exerted by the rest of the gas on the spin excitation. We evaluate the friction in terms of the quantum fluid parameters. In particular, we show that the friction is absent for integrable cases, such as an SU(2) symmetric gas of bosons or fermions. For small deviations from the exact integrability the friction is very weak, opening the possibility to observe Bloch oscillations.

• OSTI ID: 21180212
• Journal Information: Physical Review Letters, Vol. 102, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.102.070402; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BLOCH THEORY
BOSONS
EXCITATION
FERMIONS
FRICTION
INTEGRAL CALCULUS
ONE-DIMENSIONAL CALCULATIONS
OSCILLATIONS
QUANTUM FLUIDS
QUANTUM MECHANICS
SPIN
SPIN FLIP
SU-2 GROUPS