2011/03/16 by Ying Hu, Zhaoxin Liang · 3 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Bose gas #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Condensed matter physics #Physics #Quantum, superfluid, helium dynamics #Quasiparticle #Superconductivity #Visualization #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.107.110401
4 pages, 1 figure
arxiv created 2011/03/16 · openalex publication_date 2011/09/08 · arxiv updated 2015/05/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In quasi-two dimensions (quasi-2D), where excitations are frozen in one direction, the scattering amplitudes exhibit 2D features of the particle motion and a 3D to 2D dimensional crossover emerges in the behavior of scattering. We explore its physical consequences, capitalizing on a hidden connection between the Pitaevskii-Rosch dynamical symmetry and breathing modes. We find broken Pitaevskii-Rosch symmetry by arbitrarily small 2D effects, inducing a frequency shift in breathing modes. The predicted shift rises significantly from the order of 0.5% to more than 5% in transiting from the 3D-scattering to the 2D-scattering regime. Comparisons with other relevant effects suggest our results are observable within current experimental capabilities.