243 citations · 2.3k across the 105 of their papers we have counts for
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Ground-state correlations of itinerant electrons in the spinless Falicov-Kimball chain and related tight-binding systems
J. Jedrzejewski, T. Krokhmalskii, O. Derzhko
We consider the one-dimensional spinless Falicov-Kimball model of itinerant fermionic particles (``spinless electrons''), which can hop between nearest-neighbour sites only, and of…
Square-lattice s=1/2 XY model and the Jordan-Wigner fermions: The ground-state and thermodynamic properties
Oleg Derzhko, Taras Verkholyak, Reimar Schmidt +1
Using the 2D Jordan-Wigner transformation we reformulate the square-lattice s=1/2 XY (XZ) model in terms of noninteracting spinless fermions and examine the ground-state and thermo…
Quantum phase transitions in alternating transverse Ising chains: Rigorous analytical and exact numerical results
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
We examine the ground state properties of the s=1/2 transverse Ising chain with regularly alternating bonds and fields using exact analytical results and exact numerical data for l…