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math-ph2014★ 54 cited
Sinkhorn normal form for unitary matrices
Martin Idel, Michael M. Wolf
Sinkhorn proved that every entry-wise positive matrix can be made doubly stochastic by multiplying with two diagonal matrices. In this note we prove a recently conjectured analogue…
math-ph2014★ 10 cited
Perturbation Theory for Parent Hamiltonians of Matrix Product States
Oleg Szehr, Michael M. Wolf
This article investigates the stability of the ground state subspace of a canonical parent Hamiltonian of a Matrix product state against local perturbations. We prove that the spec…