Prony's method and the connected-moments expansion

Details Prony's method and the connected-moments expansion Prony's method and the connected-moments expansion

2011-11-16

arxiv.org/abs/1111.3797v1

Physics

Quantum Physics

Scientific paper

We show that Prony's method provides the full solution to the nonlinear
equations of the connected--moments expansion (CMX). Knowledge of all the
parameters in the CMX ansatz is useful for the analysis of the convergence
properties of the approach. Prony's method is also suitable for the calculation
of the correlation function for simple quantum--mechanical models.

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