| Issue |
Europhys. Lett.
Volume 59, Number 6, September II 2002
|
|
|---|---|---|
| Page(s) | 882 - 888 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00125-0 | |
| Published online | 01 September 2002 | |
Transition rates via Bethe ansatz for the spin-
Heisenberg
chain
1
Bergische Universität Wuppertal, Fachbereich Physik - D-42097
Wuppertal, Germany
2
Department of Physics, University of Rhode Island - Kingston,
RI 02881-0817, USA
Corresponding authors: michael@karbach.org gmuller@uri.edu
Received:
10
May
2002
Accepted:
1
July
2002
We use the exact determinantal representation derived by Kitanine,
Maillet, and Terras for matrix elements of local spin operators between Bethe
wave functions of the one-dimensional 
Heisenberg model to
calculate and numerically evaluate transition rates pertaining to dynamic spin
structure factors. For real solutions 
of the Bethe ansatz
equations, the size of the determinants is of order 
. We present
applications to the zero-temperature spin fluctuations parallel and
perpendicular to an external magnetic field.
PACS: 75.10.-b – General theory and models of magnetic ordering
© EDP Sciences, 2002
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