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Quantum spin chains from the perspective of quantum information theory

Verstraete, F (MPI-Garching)
Monday 23 August 2004, 15:30-16:20

Seminar Room 1, Newton Institute


We study the concept of valence bond states from the perspective of entanglement theory. This leads to several generalizations with powerful applications for the simulation of quantum spin systems. In particular, we extend the powerful Density Matrix Renormalization Group (DMRG) simulation method to the cases of periodic boundary conditions, finite-T, time-evolution, and 2 dimensions. We also discuss the relationship between entanglement and correlations in those systems, leading to a natural definition of entanglement length.


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