SPREADING OF DAMAGE AND SUSCEPTIBILITY IN THE QUANTUM S=1 2 HEISENBERG-FERROMAGNET/

In this work we extend a recently proposed prescription for studying t he dynamical properties of quantum Heisenberg ferromagnets which is ba sed on the spreading of the damage technique. Within the Handscomb Mon te Carlo method, we introduce a Hamming distance defined as a differen ce in the cyclic structure of Mayers diagrams in such a way that the q uantum nature of the Hamiltonian is accounted for. We show that the cy clic Hamming distance is closely related to the static spin susceptibi lity and illustrate our results by comparing them with previous two-lo op renormalization group calculations of the susceptibility low-temper ature behavior in two-dimensional quantum Heisenberg models.