Drag force on a moving impurity in a spin-orbit coupled Bose-Einstein condensate
arXiv:1404.3252 · doi:10.1103/PhysRevA.89.053615
Abstract
We investigate the drag force on a moving impurity in a spin-orbit coupled Bose-Einstein condensate. We prove rigorously that the superfluid critical velocity is zero when the impurity moves in all but one directions, in contrast to the case of liquid helium and superconductor where it is finite in all directions. We also find that when the impurity moves in all directions except two special ones, the drag force has nonzero transverse component at small velocity. When the velocity becomes large and the states of the upper band are also excited, the transverse force becomes very small due to opposite contributions of the two bands. The characteristics of the superfluid critical velocity and the transverse force are results of the order by disorder mechanism in spin-orbit coupled boson systems.
arXiv commentAccepted by Physical Review A
References in corpus (44)
- Topological Insulators
- Topological insulators and superconductors
- Spintronics: Fundamentals and applications
- Quantum Spin Hall Effect
- A spin-orbit coupled Bose-Einstein condensate
- Synthetic magnetic fields for ultracold neutral atoms
- Spin-Orbit Coupled Degenerate Fermi Gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Spin-Orbit Coupled Spinor Bose-Einstein Condensates
- Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
- Evidence for a critical velocity in a Bose-Einstein condensed gas
- Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
- Spin-orbit coupled weakly interacting Bose-Einstein condensates in harmonic traps
- Trapped two-dimensional condensates with synthetic spin-orbit coupling
- Unconventional Bose-Einstein condensations from spin-orbit coupling
- Motion of a heavy impurity through a Bose-Einstein condensate
- Spin-orbit coupled Bose-Einstein condensates
- Spin-Orbit Coupled Quantum Gases
- Superstripes and the excitation spectrum of a spin-orbit-coupled Bose-Einstein condensate
- Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
- Spin-Orbit Coupled Bose-Einstein Condensate under Rotation
- Half-quantum vortex state in a spin-orbit coupled Bose-Einstein condensate
- Generalized Rashba spin-orbit coupling for cold atoms
- Vortices in spin-orbit-coupled Bose-Einstein condensates
- Pressure drag in linear and nonlinear quantum fluids
- Vortex structures of rotating spin-orbit coupled Bose-Einstein condensates
- Synthetic partial waves in ultracold atomic collisions
- Non-equilibrium spin dynamics in a trapped Fermi gas with effective spin-orbit interaction
- Spin-orbit-coupled dipolar Bose-Einstein condensates
- Chiral confinement in quasirelativistic Bose-Einstein condensates
- Exotic superfluidity in spin-orbit coupled Bose-Einstein condensates
- Spin-orbit coupling and Berry phase with ultracold atoms in 2D optical lattices
- Stability of ultracold atomic Bose condensates with Rashba spin-orbit coupling against quantum and thermal fluctuations
- Friction Drag on a Particle Moving in a Nematic Liquid Crystal
- Order by Disorder in Spin-Orbit Coupled Bose-Einstein Condensates
- Paired Superfluidity and Fractionalized Vortices in Spin-orbit Coupled Bosons
- Crystallized merons and inverted merons in the condensation of spin-1 Bose gases with spin-orbit coupling
- Ground-state phases of ultracold bosons with Rashba-Dresselhaus spin-orbit coupling
- Universal phase structure of dilute Bose gases with Rashba spin-orbit coupling
- Opposite effect of spin-orbit coupling on condensation and superfluidity
- Quantum phase transition of ultracold bosons in the presence of a non-Abelian synthetic gauge field
- Phase diagrams and Thomas-Fermi estimates for spin-orbit coupled Bose-Einstein Condensates under rotation
- Renormalization of interactions of ultracold atoms in simulated Rashba gauge fields
- Stability of Excited Dressed States with Spin-Orbit Coupling
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- Motion of an Impurity in a Bose-Einstein Condensate with Weyl Spin-Orbit Coupling: Non-collinear Drag Force and Anisotropic Critical Velocity
- Detection of roton and phonon excitations in a spin-orbit coupled Bose-Einstein condensate with a moving barrier
- Drag force and superfluidity in the supersolid stripe phase of a spin-orbit-coupled Bose-Einstein condensate
- Tuning Dissipation and Excitations in Superfluid Fermi Gases with a Moving Impurity
- An oscillating Casimir potential between two impurities in a spin-orbit coupled Bose-Einstein condensate
- Drag force of a exciton-polariton condensate under non-resonant pumping