2007/03/31 by Akiyuki Tokuno, Masaki Oshikawa, Eugene Demler · 59 citations
Physics and Astronomy · #Andreev reflection #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Excitation #Fermion #Interferometry #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Reflection (computer programming) #Ring (chemistry) #Strong Light-Matter Interactions #Superconductivity #Ultracold atom #cond-mat.mes-hall #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.100.140402
published in Physical Review Letters 100(14), 140402 (American Physical Society) · 4 pages, 2 figures, final version
openalex publication_date 2008/04/08 · arxiv created 2008/04/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study one-dimensional Bose liquids of interacting ultracold atoms in the Y-shaped potential when each branch is filled with atoms. We find that the excitation packet incident on a single Y junction should experience a negative density reflection analogous to the Andreev reflection at normal-superconductor interfaces, although the present system does not contain fermions. In a ring-interferometer-type configuration, we find that the transport is completely insensitive to the (effective) flux contained in the ring, in contrast with the Aharonov-Bohm effect of a single particle in the same geometry.