3 papers
math-ph2025
Equidistant versus bipartite ground states for 1D classical fluids at fixed particle density
Laurent Bétermin, Ladislav Å amaj, Igor TravÄnec
We study the ground-state properties of one-dimensional fluids of classical (i.e., non-quantum) particles interacting pairwisely via a potential, at the fixed particle density …
math-ph2025
Structural transitions in interacting lattice systems
Laurent Bétermin, Ladislav Å amaj, Igor TravÄnec
We consider two-dimensional systems of point particles located on rectangular lattices and interacting via pairwise potentials. The goal of this paper is to investigate the phase t…
cond-mat.stat-mech2025
1D fluids with repulsive nearest-neighbour interactions: Low-temperature anomalies
Igor TravÄnec, Ladislav Å amaj
A limited number of 2D and 3D materials under a constant pressure contract in volume upon heating isobarically; this anomalous phenomenon is known as the negative thermal expansion…