- Tytuł:
- Effective Field Methods for Magnetic Systems
- Autorzy:
-
Kamieniarz, G.
Dekeyser, R.
Musiał, G. - Powiązania:
- https://bibliotekanauki.pl/articles/1930600.pdf
- Data publikacji:
- 1994-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
64.60.Cn
64.60.Fr
05.50.+q
75.10.Dg
75.10.Hk
75.10.Jm
75.40.Cx
75.40.Mg - Opis:
- The self-consistency conditions inherent in the mean-field approximation are extended to take into account some pair correlations. Ii is shown that this extension is systematically improvable and applicable to the spin systems with short-range interactions in the entire temperature region. With two correlations included and the renormalization-group ideas implemented, the critical properties of the Ising model are satisfactorily revealed. Moreover, the improved estimates of the thermodynamical quantities for the quantum linear XY model from the finite-size calculations are found down to very low temperatures.
- Źródło:
-
Acta Physica Polonica A; 1994, 85, 2; 413-417
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł