2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157026We numerically investigate Heisenberg XXZ spin-1/2 chain in a spatially random static magnetic field. We find that tDMRG simulations of time evolution can be performed efficiently, namely the dimension of matrices needed to efficiently represent the time-evolution increases linearly with time and entanglement entropies for typical chain bipartitions increase logarithmically. As a result, we show that for large enough random fields infinite temperature spin-spin correlation function displays exponential localization in space indicating insulating behavior of the model.6 pages, 5 PS figures; v2: few minor changes, one additional figureQuantum PhysicsStrongly Correlated Electronstext