A matrix product state is a decomposition of a vector v [member of] [C.sup.N] such that
CIRAC, Matrix product state representations, Quantum Inf.
Among the class of tensor networks, matrix product states (MPS) and matrix product operators (MPO) count among the best established methods.
The rest of this work is structured as follows: after a basic introduction to matrix product states and operators in Section 2, we will introduce the block Lanczos method we employ in this work and explain its connection to Gauss quadrature in Section 3.
GARCIA-RIPOLL, Time evolution of matrix product states, New J.
SCHOLLWOCK, The density-matrix renormalization group in the age of matrix product states, Ann.
CIRAC, Matrix product states represent ground states faithfully, Phys.
Zanardi, "Typicality in random matrix product states," Physical Review A: Atomic, Molecular and Optical Physics, vol.
Since the late 1990s, there have been several candidates for such measures: the induced measures [1, 2], the Bures measure , or random matrix product states , just to name a few.