2005/11/29 by Ana Maria Rey, Ana María Rey, Indubala I. Satija +3 · 1 citation
Mathematics · Physics and Astronomy · #Atomic and Subatomic Physics Research #Boson #Coherence (philosophical gambling strategy) #Cold Atom Physics and Bose-Einstein Condensates #Core (optical fiber) #Geometry #Mathematics #Noise (video) #Observable #Optics #Physics #Quantum #Quantum mechanics #Quantum, superfluid, helium dynamics #Spin (aerodynamics) #Spontaneous symmetry breaking #Statistical physics #Symmetry (geometry) #Symmetry breaking #Theoretical physics #cond-mat.other
paper · pdf · doi:10.1088/0953-4075/39/10/s17
published as Journal of Physics B, Vol.39, S177 (2006) · 17 pages, 6 figures. This is a detailed revised version of quant-ph/0507153. It has been submitted to Journal of Physics B: the special edition for the Cortona BEC workshop
arxiv created 2005/11/29 · openalex publication_date 2006/05/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Noise correlations, such as those observable in the time of flight images of a released cloud, are calculated for hard-core bosonic (HCBs) atoms. These second-order correlations are used to explore quantum coherence of strongly correlated bosons in the fermionized regime with and without external parabolic confinement. Our analysis points to distinctive new experimental signatures of the Mott phase. We also calculate noise correlations for the corresponding spin-1/2 XY model onto which the HCB system is standardly mapped. Our study shows important differences between the two systems due to the contribution of multiply occupied virtual states in HCBs. Such states do not exist in spin models. An interesting manifestation of such states is the breaking of particle–hole symmetry in HCB systems.