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Ground State Approximation for Strongly Interacting Systems in Arbitrary Dimension by Anders, S.; Plenio, M. B.; Dür, W.; Verstraete, F.; Briegel, H. -J. is a scholarly article available to read on EtoBox.

What is Ground State Approximation for Strongly Interacting Systems in Arbitrary Dimension about?

We introduce a variational method for the approximation of ground states of strongly interacting spin systems in arbitrary geometries and spatial dimensions. The approach is based on weighted graph states and superpositions thereof. These states allow for the efficient computation of all local observables (e.g. energy) and include states with diverging correlation length and unbounded multi-particle entanglement. As a demonstration we apply our approach to the Ising model on 1D, 2D and 3D square-lattices. We also present generalizations to higher spins and continuous-variable systems, which allows for the investigation of lattice field theories.

Author

Anders, S.; Plenio, M. B.; Dür, W.; Verstraete, F.; Briegel, H. -J.

Published

2006

Language

EN