2019/04/30 by Kousuke Ihara, Kenichi Kasamatsu
Mathematics · Physics and Astronomy · #Bose–Einstein condensate #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Condensed matter physics #Coupling (piping) #Domain (mathematical analysis) #Domain wall (magnetism) #Geometry #Instability #Materials science #Mathematical analysis #Mathematics #Mechanics #Nonlinear Photonic Systems #Nonlinear system #Perpendicular #Phase (matter) #Phase diagram #Physics #Plane (geometry) #Quantum electrodynamics #Quantum mechanics #Strong Light-Matter Interactions #Transverse plane #Vortex #cond-mat.quant-gas #hep-th
paper · pdf · doi:10.1103/physreva.100.013630
published as Phys. Rev. A 100, 013630 (2019) · 9 pages, 6 figures
arxiv created 2019/07/02 · openalex publication_date 2019/07/31 · arxiv updated 2019/08/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study transverse instability and disintegration dynamics of a domain wall of a relative phase in two-component Bose-Einstein condensates with a coherent Rabi coupling. We obtain analytically the stability phase diagram of the stationary solution of the domain wall for the one-dimensional coupled Gross-Pitaevskii equations in the plane of the Rabi frequency and the intercomponent coupling constant. Outside the stable region, the domain wall is dynamically unstable for the transverse modulation along the direction perpendicular to the phase kink. The nonlinear evolution associated with the instability is demonstrated through numerical simulations for both the domain wall without edges and that with edges formed by the quantized vortices.