Title: Green's function and excitation spectrum of finite lattices
Authors: Cojocaru, S ×
Barsan, V
Ceulemans, Arnout #
Issue Date: Jul-2006
Publisher: Akademie-Verlag
Series Title: Physica Status Solidi B, Basic Research vol:243 issue:8 pages:1963-1977
Abstract: New analytical results are obtained for the Green's function of a finite one-dimensional lattice with nearest neighbor interaction using discrete Fourier transform. The method offers an alternative to the Bethe Ansatz, but does not require any a priori assumption on the form of the wavefunction. This makes it suitable for extensions to nano-ferromagnets of higher dimensions. Solutions of the Heisenberg spin chain with periodic and open boundary conditions are considered as examples. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
ISSN: 0370-1972
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantum Chemistry and Physical Chemistry Section
× corresponding author
# (joint) last author

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