Parts | Days | Selection | Search | Downloads | Help
DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.54: Poster
Thursday, March 30, 2006, 16:00–18:00, P1
Transport Phenomena in 1-D spin chains — •Pedro Vidal, Günter Mahler, and Mathias Michel — 1. Institut für Theoretische Physik, Universität Stuttgart
We study transport in a 1-D quantum spin chain by solving the Schrödinger equation. Because of the integrability of our models, and thus their conservation laws, we can analyse the system in a closed form in subspaces of our Hilbert space. Local quantities are defined via the coarse graining of our system and the No-dqdiffusionNo-dq behavior of these observables is calculated analyticaly or numerically, depending on the complexity of the sub-Hilbert space. We find evidence for a non experimental 1/t decay for the local coarse grained observables such as the local energy.