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cond-mat.str-el2000
Quantum phase transition in a random-tiling model
D. K. Sunko
The analogue of a Mott-Hubbard transition is discussed, which appears at an incommensurate filling in a model of a two-dimensional plane, randomly tiled with CuO_4 `molecules', sim…
cond-mat.stat-mech2000
New derivation of the cluster cumulant formula
D. K. Sunko
The cluster cumulant formula of Kubo is derived by appealing only to elementary properties of subsets and binomial coefficients. It is shown to be a binomial transform of the grand…