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
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arXiv:0810.2604 :<br />
Summary<br />
Vortices <strong>on</strong> 2D lattices (hard core bos<strong>on</strong>s limit)<br />
1. Have a light mass, vortex solid can melt into a<br />
unc<strong>on</strong>densed Quantum <strong>Vortex</strong> Liquid at 0.006 vortices per site.<br />
2. Hall c<strong>on</strong>ductivity (Magnus acti<strong>on</strong>) reverses sign at half filling,<br />
with an associated vanishing temperature scale.<br />
3. Vortices at half filling carry local spin 1/2 doublets. (V-spins)<br />
4. QCP at half filling<br />
QVL (metal)<br />
B<br />
CDW<br />
(insulator)<br />
<strong>Vortex</strong> solid (superfluid)<br />
1<br />
t/V
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