MIDIT OFD CATS Modelling, Nonlinear Dynamics Optics and Fluid Dynamics Chaos and Turbulence Studies and Irreversible Thermodynamics Risø National Laboratory Niels Bohr Institute and Technical University of Denmark Building 128 Department of Chemistry Building 321 P.O. Box 49 University of Copenhagen DK-2800 Lyngby DK-4000 Roskilde DK-2100 Copenhagen Ø Denmark Denmark Denmark
by Mario Salerno
Dipartimento di Fisica Teorica
Università di Salerno
Thursday December 17, 1998, 15.00-16.00 h
at MIDIT, IMM, Building 305, room 027, DTU
Abstract: The thermodynamic limit of the Heisenberg model is studied in detail. Using the string hypothesis, the Bethe equations are transformed into a linear integral equation for the densities. Solving this equation we derive the structure of the spectrum and the energy of the ground state of the antiferromagnetic chain.