Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.070402
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Funding
- NSF [DMR-0405212, DMR-0804266]
- EPSRC [GR/T23725/01]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0804266] Funding Source: National Science Foundation
- Engineering and Physical Sciences Research Council [EP/D072514/1, EP/E049095/1] Funding Source: researchfish
- EPSRC [EP/E049095/1, EP/D072514/1] Funding Source: UKRI
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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.
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