Emergence of Quasicondensates of Hard-Core Bosons at Finite Momentum
نویسندگان
چکیده
منابع مشابه
Dynamical Quasicondensation of Hard-Core Bosons at Finite Momenta.
Long-range order in quantum many-body systems is usually associated with equilibrium situations. Here, we experimentally investigate the quasicondensation of strongly interacting bosons at finite momenta in a far-from-equilibrium case. We prepare an inhomogeneous initial state consisting of one-dimensional Mott insulators in the center of otherwise empty one-dimensional chains in an optical lat...
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Magnetotransport of hard-core bosons is studied using an XXZ quantum spin model representation, appropriately gauged on the torus to allow for an external magnetic field. We find strong lattice effects near half filling. An effective quantum mechanical description of the vortex degrees of freedom is derived. Using semiclassical and numerical analysis we compute the vortex-hopping energy tV, whi...
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We study properties of the supersolid phase observed for hard-core bosons on the triangular lattice near half-integer filling factor, and the phase diagram of the system at finite temperature. We find that the solid order is always of the (2m, -m, -m) with m changing discontinuously from positive to negative values at half filling, in contrast with phases observed for Ising spins in a transvers...
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Low-dimensional, degenerate Bose gases are expected to have significantly different coherence properties than their three-dimensional ~3D! counterparts. In one-dimensional ~1D! uniform systems, no true condensate can exist at any temperature T because of a large population of low-lying states that destroys the phase coherence ~see Ref. @1# and references therein!. For a trapped gas, the situati...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.93.230404