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Title:

Correlated Fermions on a Checkerboard Lattice

Document type:
Zeitschriftenaufsatz
Author(s):
Pollmann, Frank; Betouras, Joseph J.; Shtengel, Kirill; Fulde, Peter
Abstract:
A model of strongly correlated spinless fermions on a checkerboard lattice is mapped onto a quantum fully packed loop model. We identify a large number of fluctuationless states specific to the fermionic case. We also show that for a class of fluctuating states the fermionic sign problem can be gauged away. This claim is supported by numerical evaluation of the low-lying states. Furthermore, we analyze excitations at the Rokhsar-Kivelson point of this model using the relation to the height model...     »
Journal title:
Physical Review Letters 2006-10
Year:
2006
Journal volume:
97
Journal issue:
17
Fulltext / DOI:
doi:10.1103/physrevlett.97.170407
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
26.10.2006
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