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Calculation of reduced density matrices from correlation functions

Journal of Physics A Mathematical and General · 2003 · Vol. 36(14) · pp. L205–L208

Ingo Peschel✉(Freie Universität Berlin)

Abstract

It is shown that for solvable fermionic and bosonic lattice systems, the reduced density matrices can be determined from the properties of the correlation functions. This provides the simplest way to these quantities which are used in the density-matrix renormalization group method.

Physics of Superconductivity and Magnetism Quantum and electron transport phenomena Advanced Condensed Matter PhysicsDensity matrix renormalization groupDensity matrixCorrelationLattice (music)Renormalization groupStatistical physicsMathematicsMathematical physicsMatrix (chemical analysis)Correlation function (quantum field theory)

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