Wojtkiewicz, Jacek; Skolasiński, Rafał - In: Physica A: Statistical Mechanics and its Applications 419 (2015) C, pp. 134-144
The Lieb–Schupp inequality is the inequality between ground state energies of certain antiferromagnetic Heisenberg spin systems. In our paper, the numerical value of energy difference given by Lieb–Schupp inequality has been tested for spin systems in various geometries: chains, ladders and...
