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Symmetry-enriched topological order in tensor networks: Defects, gauging and anyon condensation
Dominic J. Williamson, Nick Bultinck, Frank Verstraete
We study symmetry-enriched topological order in two-dimensional tensor network states by using graded matrix product operator algebras to represent symmetry-induced domain walls. A…
Thermal States as Convex Combinations of Matrix Product States
Mario Berta, Fernando G. S. L. Brandao, Jutho Haegeman +2
We study thermal states of strongly interacting quantum spin chains and prove that those can be represented in terms of convex combinations of matrix product states. Apart from rev…
Variational optimization algorithms for uniform matrix product states
V. Zauner-Stauber, L. Vanderstraeten, M. T. Fishman +2
We combine the Density Matrix Renormalization Group (DMRG) with Matrix Product State tangent space concepts to construct a variational algorithm for finding ground states of one di…