2004/09/30 by Congjun Wu · 1 citation
Computer Science · Physics and Astronomy · #Charge (physics) #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Cooper pair #Fermion #Ising model #Pairing #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #Singlet state #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.95.266404
published as Phys. Rev. Lett. 95, 266404 (2005) · 4 pages, 2 figures, revised version
arxiv created 2005/11/09 · openalex publication_date 2005/12/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Novel competing orders are found in spin-3/2 cold atomic systems in one-dimensional optical traps and lattices. In particular, the quartetting phase, a four-fermion counterpart of Cooper pairing, exists in a large portion of the phase diagram. The transition between the quartetting and singlet Cooper pairing phases is controlled by an Ising symmetry breaking in one of the spin channels. The singlet Cooper pairing phase also survives in the purely repulsive interaction regime. In addition, various charge and bond ordered phases are identified at commensurate fillings in lattice systems.