22 citations · 132 across the 15 of their papers we have counts for
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Mean-field theory of orientational ordering in rigid rotor models with identical atoms: spin conversion and thermal equilibration
Balazs Hetenyi
In coupled rotor models which describe identical rotating nuclei the nuclear spin states restrict the possible angular momenta of each molecule. There are two mean-field approaches…
Many-body position operator in lattice fermionic systems with periodic boundary conditions
Balazs Hetenyi
A total position operator in the position representation is derived for lattice fermionic systems with periodic boundary conditions. The operator is shown to be Hermitian, the…
Effect of the exchange hole on the Gutzwiller approximation in one dimension
Balazs Hetenyi, Hans Gerd Evertz, Wolfgang von der Linden
The Gutzwiller approximate solution to the Gutzwiller wavefunction yields exact results for the Gutzwiller wavefunction in the infinite dimensional limit. Implicit in the Gutzwille…
2D and 3D quantum rotors in a crystal field: critical points, metastability, and reentrance
Yuri A. Freiman, B. Hetenyi, S. M. Tretyak
An overview of results of models of coupled quantum rotors is presented. We focus on rotors with dipolar and quadrupolar potentials in two and three dimensions, potentials which co…