Vacancy diffusion in the triangular lattice dimer model

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Jeng, Monwhea
Bowick, Mark J.
Krauth, Werner
Schwarz, Jennifer
Xing, Xiangjun
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Abstract
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We study vacancy diffusion on the classical triangular lattice dimer model, sub ject to the kinetic constraint that dimers can only translate, but not rotate. A single vacancy, i.e. a monomer, in an otherwise fully packed lattice, is always localized in a tree-like structure. The distribution of tree sizes is asymptotically exponential and has an average of 8.16 \pm 0.01 sites. A connected pair of monomers has a finite probability of being delocalized. When delocalized, the diffusion of monomers is anomalous:
Comment: 15 pages, 27 eps figures. submitted to Physical Review E
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Condensed Matter - Statistical Mechanics
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