RT Journal Article
T1 The Berry-Tabor conjecture for spin chains of Haldane-Shastry type
A1 Barba, J. C.
A1 Finkel Morgenstern, Federico
A1 González López, Artemio
A1 Rodríguez González, Miguel Ángel
AB According to a long-standing conjecture of Berry and Tabor, the distribution of the spacings between consecutive levels of a "generic" integrable model should follow Poisson's law. In contrast, the spacings distribution of chaotic systems typically follows Wigner's law. An important exception to the Berry-Tabor conjecture is the integrable spin chain with long-range interactions introduced by Haldane and Shastry in 1988, whose spacings distribution is neither Poissonian nor of Wigner's type. In this letter we argue that the cumulative spacings distribution of this chain should follow the "square root of a logarithm" law recently proposed by us as a characteristic feature of all spin chains of Haldane-Shastry type. We also show in detail that the latter law is valid for the rational counterpart of the Haldane-Shastry chain introduced by Polychronakos.
PB EPL Association, European Physical Society
SN 0295-5075
YR 2008
FD 2008-07
LK https://hdl.handle.net/20.500.14352/51496
UL https://hdl.handle.net/20.500.14352/51496
LA eng
NO ©EPLA, 2008.This work was partially supported by the DGI under grant no. FIS2005-00752, and by the Complutense University and the DGUI under grant no. GR74/07-910556. JCB acknowledges the financial support of the Spanish Ministry of Education and Science through an FPU scholarship.
NO DGI, Spain
NO Complutense University
NO DGUI, Madrid
DS Docta Complutense
RD 11 may 2025