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Tensor-entanglement renormalization group approach to topological phases

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arxiv 0807.2010 v1 pith:WAHUCA43 submitted 2008-07-13 cond-mat.str-el

Tensor-entanglement renormalization group approach to topological phases

classification cond-mat.str-el
keywords approachgroupphasephasesrenormalizationtensor-entanglementorderedstates
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The tensor-entanglement renormalization group approach is applied to Hamiltonians that realize a class of topologically ordered states -- string-net condensed states. We analyze phase transitions between phases with and without string-net condensation. These phase transitions change topological order without changing any symmetries. This demonstrates that the tensor-entanglement renormalization group approach can be used to study the phase diagram of a quantum system with topologically ordered phases.

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