Spontaneous symmetry breaking and collapse in bosonic Josephson junctions
Year: 2010
Authors: Mazzarella G., Salasnich L.
Autors Affiliation: Dipartimento di Fisica “Galileo Galilei” and Consorzio Nazionale nteruniversitatio per le Scienze Fisiche della Materia (CNISM),Università di Padova, Via Marzolo 8, I-35122 Padova, Italy; CNR – Istituto Nazionale di Ottica Research Unit at Padova, Via Marzolo 8, I-35122 Padova, Italy; Center for Applied Mathematics and Theoretical Physics, University of Maribor, Krekova 2, SI-2000 Maribor, Slovenia
Abstract: We investigate an attractive atomic Bose-Einstein condensate (BEC) trapped by a double-well potential in the axial direction and by a harmonic potential in the transverse directions. We obtain numerically a quantum phase diagram which includes all the three relevant phases of the system: Josephson, spontaneous symmetry breaking (SSB), and collapse. We consider also the coherent dynamics of the BEC and calculate the frequency of population-imbalance mode in the Josephson phase and in the SSB phase up to the collapse. We show that these phases can be observed by using ultracold vapors of Li-7 atoms in a magneto-optical trap.
Journal/Review: PHYSICAL REVIEW A
Volume: 82 (3) Pages from: 33611-1 to: 33611-5
KeyWords: Bose-einstein Condensate; Oscillations; Dynamics; CloudsDOI: 10.1103/PhysRevA.82.033611ImpactFactor: 2.861Citations: 12data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here
