title: Ground states of the lattice-gas model on the triangular lattice with nearest- and next-nearest-neighbor pairwise interactions and with three-particle interaction: full-dimensional ground states.
abstract: In this paper, we completely solve the problem of the ground states of the lattice-gas model on the infinite plane triangular lattice with nearest- and next-nearest-neighbor pairwise interactions and with additional interaction between three particles at the vertices of a nearest-neighbor triangle. We use this model to illustrate how the complete solution of the ground-state problem of a lattice-gas model (or equivalent spin model) should look.
authors.affiliation: Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, 1 Svientsitskii Street, 79011 Lviv, Ukraine.
authors.forename: Yu I
authors.initials: YI
authors.lastname: Dublenych