Jordan-Wigner fermions and the spin-1/2 anisotropic XY model on a square lattice

Oleg Derzhko; Johannes Richter; Taras Verkholyak

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Jordan-Wigner fermions and the spin-1/2 anisotropic XY model on a square lattice

Oleg Derzhko·Johannes Richter·Taras Verkholyak

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Abstract

Using the two-dimensional Jordan-Wigner fermionization we calculate the thermodynamic quantities of the (spatially anisotropic) square-lattice spin-1/2 anisotropic XY (XZ) model. We compare the results of different approaches for the ground-state and thermodynamic properties of the model.

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Oleg Derzhko, Johannes Richter, Taras Verkholyak. 2001-11-11. Jordan-Wigner fermions and the spin-1/2 anisotropic XY model on a square lattice. https://arxiv.org/abs/cond-mat/0111203

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