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Symmetric-group approach to the study of the traces ofp-order reduced-density operators and of products of these operators

1990

In this work we give the values of traces of p-order reduced-density operators. These traces are obtained by application of the spin functions and of the symmetric-group properties. The relations obtained here will allow an easy and fast evaluation of the high-order spin-adapted reduced Hamiltonian matrix elements and high-order Hamiltonian moments.

PhysicsPure mathematicsFast evaluationsymbols.namesakeHamiltonian matrixSymmetric groupsymbolsReduced density matrixSymmetry groupOperator theoryHamiltonian (quantum mechanics)Atomic and Molecular Physics and OpticsEigenvalues and eigenvectorsPhysical Review A
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