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Spin-adapted Matrix Product States and Operators (1602.01145v2)
Published 2 Feb 2016 in physics.chem-ph, cond-mat.str-el, and physics.comp-ph
Abstract: Matrix product states (MPSs) and matrix product operators (MPOs) allow an alternative formulation of the density matrix renormalization group algorithm introduced by White. Here, we describe how non-abelian spin symmetry can be exploited in MPSs and MPOs by virtue of the Wigner--Eckart theorem at the example of the spin-adapted quantum chemical Hamiltonian operator.
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