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cond-mat.stat-mech2004
Regularly alternating spin-1/2 anisotropic XY chains: The ground-state and thermodynamic properties
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
Using the Jordan-Wigner transformation and continued fractions we calculate rigorously the thermodynamic quantities for the spin-1/2 transverse Ising chain with periodically varyin…
cond-mat.stat-mech2004
Exact results for spatial decay of the one-body density matrix in low-dimensional insulators
Janusz Jedrzejewski, Taras Krokhmalskii
We provide a tight-binding model of insulator, for which we derive an exact analytic form of the one-body density matrix and its large-distance asymptotics in dimensions . T…