74 citations · 350 across the 15 of their papers we have counts for
15 papers
Extended Falicov-Kimball model: Hartree-Fock vs DMFT approach
Konrad Jerzy Kapcia, Romuald Lemański, Marcin Jakub Zygmunt
In this work, we study the extended Falicov-Kimball model at half-filling within the Hartree-Fock approach (HFA) (for various crystal lattices) and compare the results obtained wit…
Extended Falicov-Kimball model: Exact solution for finite temperatures
Konrad Jerzy Kapcia, Romuald Lemański, Stanisław Robaszkiewicz
The extended Falicov-Kimball model is analyzed exactly for finite temperatures () in the limit of large dimensions. Onsite and intersite density-density interactions an…
Extended Falicov-Kimball model: exact solution for the ground state
Romuald Lemański, Konrad Jerzy Kapcia, Stanisław Robaszkiewicz
The extended Falicov-Kimball model is analyzed exactly in the ground state at half filling in the limit of large dimensions. In the model the on-site and the intersite density-dens…
Momentum distribution and ordering in mixtures of ultracold light and heavy fermionic atoms
M. M. Maska, R. Lemanski, C. J. Williams +1
The momentum distribution is one of the most important quantities which provides information about interactions in many-body systems. At the same time it is a quantity that can eas…
Pattern formation in mixtures of ultracold atoms in optical lattices
M. M. Maska, R. Lemanski, J. K. Freericks +1
Regular pattern formation is ubiquitous in nature; it occurs in biological, physical, and materials science systems. Here we propose a set of experiments with ultracold atoms that…
Charge and magnetic order in the 2D Falicov-Kimball model with Hund coupling at finite temperatures
Romuald Lemanski
We perform a simplified analysis of finite temperature properties of the generalized Falicov-Kimball model with Hund coupling. The model is studied on the square lattice for fixed…