TY - JOUR
T1 - Exact calculation of the ground-state dynamical spin correlation function of a S=1/2 antiferromagnetic Heisenberg chain with free spinons
AU - Haldane, F. D.M.
AU - Zirnbauer, M. R.
PY - 1993
Y1 - 1993
N2 - We calculate the exact dynamical magnetic structure factor S(Q,E) in the ground state of a one-dimensional S=1/2 antiferromagnet with gapless free S=1/2 spinon excitations, the Haldane-Shastry model with inverse-square exchange, which is in the same low-energy universality class as Bethe's nearest-neighbor exchange model. Only two-spinon excited states contribute, and S(Q,E) is found to be a very simple integral over these states.
AB - We calculate the exact dynamical magnetic structure factor S(Q,E) in the ground state of a one-dimensional S=1/2 antiferromagnet with gapless free S=1/2 spinon excitations, the Haldane-Shastry model with inverse-square exchange, which is in the same low-energy universality class as Bethe's nearest-neighbor exchange model. Only two-spinon excited states contribute, and S(Q,E) is found to be a very simple integral over these states.
UR - http://www.scopus.com/inward/record.url?scp=4244178531&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4244178531&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.71.4055
DO - 10.1103/PhysRevLett.71.4055
M3 - Article
C2 - 10055142
AN - SCOPUS:4244178531
SN - 0031-9007
VL - 71
SP - 4055
EP - 4058
JO - Physical review letters
JF - Physical review letters
IS - 24
ER -