Three-Diagonal Blocks of Two-Magnon Hamiltonians with Specified Wave Numbers for Heisenberg Rings
[ 1 ] Instytut Matematyki, Wydział Elektryczny, Politechnika Poznańska | [ P ] pracownik
2019
artykuł naukowy
angielski
EN We demonstrate the method of creating blocks of Hamiltonian matrices for Heisenberg rings with N nodes and r = 2 overturned spins, depending on total quasimomentum k. Initial problem of dimension ( N 2 ) reduces, approximately, N -tuply, depending on N and k numbers. We consider block Hamiltonians using a particular basis, called wavelet basis. In this basis, these blocks take three-diagonal form.
1255 - 1258
inne
witryna wydawcy
ostateczna wersja opublikowana
40
70
0,579