Spin Dynamics of La_2CuO_4 and the Two-Dimensional Heisenberg Model
Abstract
The spin-lattice relaxation rate
1/
T
1
and the spin echo decay rate
1/
T
2G
for the 2D Heisenberg model are calculated using quantum Monte Carlo and maximum entropy analytic continuation. The results are compared to recent experiments on La
2
CuO
4
, as well as predictions based on the non-linear
σ
-model.