Spectrum, symmetries, and dynamics of Heisenberg spin-1/2 chains

K Joel, D Kollmar, L Santos - APS March Meeting Abstracts, 2013 - ui.adsabs.harvard.edu
Quantum spin chains are prototype quantum many-body systems. They are employed in the
description of various complex physical phenomena. Here we provide an introduction to the
subject by focusing on the time evolution of Heisenberg spin-1/2 chains with couplings
between nearest-neighbor sites only. We study how the anisotropy parameter and the
symmetries of the model affect its time evolution. Our predictions are based on the analysis
of the eigenvalues and eigenstates of the system and then confirmed with actual numerical …
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