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cond-mat.str-el2012★ 95 cited
An order parameter for symmetry-protected phases in one dimension
Jutho Haegeman, David Perez-Garcia, Ignacio Cirac +1
We introduce an order parameter for symmetry-protected phases in one dimension which allows to directly identify those phases. The order parameter consists of string-like operators…
cond-mat.str-el2010★ 794 cited
Classifying quantum phases using Matrix Product States and PEPS
Norbert Schuch, David Perez-Garcia, Ignacio Cirac
We give a classification of gapped quantum phases of one-dimensional systems in the framework of Matrix Product States (MPS) and their associated parent Hamiltonians, for systems w…