Lattice Effects on Interacting Bosons and their Vortex Dynamics

Lattice Effects on Interacting Bosons and their Vortex Dynamics Lattice Effects on Interacting Bosons and their Vortex Dynamics

hep.physics.uoc.gr
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07.01.2015 Views

Hard Core Bosons Hard core bosons S=1/2, XXZ model superfluid V < t half filling charge density wave V > t

Properties of XXZ model superfluid density (classical) Mean field theory 0 1 charge conjugation 1. Half filling has maximal stiffness 2. At half filling the Hall conductivity vanishes 3. Hall conductivity is antisymmetric about half filling

Hard Core Bos<strong>on</strong>s<br />

Hard core bos<strong>on</strong>s<br />

S=1/2, XXZ model<br />

superfluid<br />

V < t<br />

half filling<br />

charge density wave<br />

V > t

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