78 citations · 505 across the 48 of their papers we have counts for
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Magnetic properties of antiferromagnetic quantum Heisenberg spin systems with a strict single particle site occupation
Raoul Dillenschneider, Jean Richert
We work out the magnetization and susceptibility of Heisenberg- and XXZ-model antiferromagnet spin-1/2 systems in dimensions under a rigorous constraint of single particle site…
A variational approach to the low energy properties of even-legged d-dimensional quantum spin systems
Jean Richert
We develop a variational formalism in order to study the structure of low energy spectra of frustrated quantum spin systems. It is first applied to trial wavefunctions of ladders w…
Site occupation constraints in mean-field approaches of quantum spin systems at finite temperature
Raoul Dillenschneider, Jean Richert
We study the effect of site occupation on the description of quantum spin systems at finite temperature and mean-field level. We impose each lattice site to be occupied by a single…
Ageing without detailed balance in the bosonic contact and pair-contact processes: exact results
Florian Baumann, Malte Henkel, Michel Pleimling +1
Ageing in systems without detailed balance is studied in the exactly solvable bosonic contact process and the critical bosonic pair-contact process. The two-time correlation functi…