RT Journal Article T1 Level density of spin chains of Haldane-Shastry type A1 Enciso, Alberto A1 Finkel Morgenstern, Federico A1 González López, Artemio AB We provide a rigorous proof of the fact that the level density of all known su (m) spin chains of Haldane-Shastry type associated with the A(N-1) root system approaches a Gaussian distribution as the number of spins N tends to infinity. Our approach is based on the study of the large-N limit of the characteristic function of the level density, using the description of the spectrum in terms of motifs and the asymptotic behavior of the transfer matrix. PB American Physical Society SN 1539-3755 YR 2010 FD 2010-11-15 LK https://hdl.handle.net/20.500.14352/44673 UL https://hdl.handle.net/20.500.14352/44673 LA eng NO ©2010 The American Physical Society.This work was supported in part by the MICINN and the UCM–Banco Santander under Grants No. FIS2008-00209 and No. GR58/08-910556. The authors would also like to thank Gabriel Álvarez for some useful discussions, and the anonymous referees of a previous version of this paper for their helpful suggestions. NO MICINN NO UCM–Banco Santander DS Docta Complutense RD 7 abr 2025