Three-Diagonal Blocks of Two-Magnon Hamiltonians with Specified Wave Numbers for Heisenberg Rings
[ 1 ] Instytut Matematyki, Wydział Elektryczny, Politechnika Poznańska | [ P ] employee
2019
scientific article
english
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
other
publisher's website
final published version
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