The dimer model on the triangular lattice

Details The dimer model on the triangular lattice The dimer model on the triangular lattice

2011-06-17

arxiv.org/abs/1106.3376v2

Phys. Rev. E 84, 021107 (2011)

Physics

Condensed Matter

Statistical Mechanics

15 pages, 4 figures

Scientific paper

We analyze the partition function of the dimer model on an $\mathcal{M} \times \mathcal{N}$ triangular lattice wrapped on torus obtained by Fendley, Moessner and Sondhi [Phys. Rev. B \textbf{66}, 214513 (2002)]. From a finite-size analysis we have found that the dimer model on such a lattice can be described by conformal field theory having central charge $c=1$. The shift exponent for the specific heat is found to depend on the parity of the number of lattice sites $\mathcal{N}$ along a given lattice axis: e.g., for odd $\mathcal{N}$ we obtain the shift exponent $\lambda=1$, while for even $\mathcal{N}$ it is infinite ($\lambda=\infty$). In the former case, therefore, the finite-size specific-heat pseudocritical point is size dependent, while in the latter case, it coincides with the critical point of the thermodynamic limit.

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