Direct simulations of the quantum model for csnif3
Caramico d'Auria, A × Esposito, F Esposito, U Kamieniarz, G Dekeyser, Raf #
Państwowe Wydawnictwo Naukowe
Acta Physica Polonica A vol:85 issue:2 pages:409-412
We address the problem of reliability of a finite-chain technique for CsNiF3. We investigate the effect of the boundary conditions, completely neglected so far, and apply a new extrapolation procedure appropriate for quantities showing non-monotonic behaviour. From a detailed analysis of the specific heat existing theoretical estimates for the model parameters are discriminated and a strong evidence for the reliability of the direct finite-chain technique predictions is presented.