NEW O(3) TRANSITION IN 3 DIMENSIONS

Authors
KAMAL M MURTHY G
Citation
M. Kamal et G. Murthy, NEW O(3) TRANSITION IN 3 DIMENSIONS, Physical review letters, 71(12), 1993, pp. 1911-1914
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
12
Year of publication
1993
Pages
1911 - 1914
Database
ISI
SICI code
0031-9007(1993)71:12<1911:NOTI3D>2.0.ZU;2-8
Abstract
A three-dimensional lattice of Heisenberg spins with nearest-neighbor interactions is studied by numerical simulation under the constraint t hat no free topological singularities (hedgehogs) are allowed. Only ne arest-neighbor pairs of oppositely charged hedgehogs are permitted in the sum over configurations. A disordering transition with exponents d ifferent from the usual Heisenberg transition is found and tentatively identified as a pure spin wave disordering transition.