A Monte Carlo Study of Correlations in Quantum Spin Ladders

M. Greven, R. J. Birgeneau, U. -J. Wiese

We study antiferromagnetic spin--1/2 Heisenberg ladders, comprised of $n_c$ chains ($2\le n_c\le 6$) with ratio $J_{\perp }/J_{\Vert }$ of inter-- to intra--chain couplings. From mea…