- Tytuł:
- Correlation Induced Optimization of Wave Functions: the Hubbard Chain
- Autorzy:
-
Spałek, J.
Podsiadły, R.
Wójcik, W. - Powiązania:
- https://bibliotekanauki.pl/articles/2013007.pdf
- Data publikacji:
- 2000-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.10.Fd
71.15.Fv
31.25.Nj - Opis:
- We determine the explicit form of the single-particle Wannier functions {w$\text{}_{i}(r)}$ appearing in the parameters of quantum models. The method is illustrated on the example of the Hubbard chain, for which we derive the renormalized wave equation starting from a variational principle and by treating the system ground state energy as a functional of {w$\text{}_{i}(r)}$ and their derivatives. In this manner, the optimized basis is obtained only after the electronic correlations have been included in the rigorous Lieb-Wu solution. The results for the ground state energy and the size of the renormalized s-type orbitals, both as a function of interatomic distance, are calculated explicitly.
- Źródło:
-
Acta Physica Polonica A; 2000, 97, 3; 381-384
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł