Effective Hamiltonian, Mori Product and Quantum Dynamics
A.Cuccoli, V.Tognetti, R.Giachetti, R.Vaia
TL;DR
This paper introduces an extended effective potential approach to approximate quantum dynamical correlation functions using Mori products within the PQSCHA framework, enhancing quantum dynamics analysis.
Contribution
It presents a novel extension of the effective potential theory enabling the calculation of quantum dynamical correlation functions via Mori products in the PQSCHA approximation.
Findings
Provides a method to compute quantum relaxation functions.
Enables approximate evaluation of quantum dynamical correlations.
Integrates Mori product formalism with PQSCHA.
Abstract
An appropriate extension of the effective potential theory is presented that permits the approximate calculation of the dynamical correlation functions for quantum systems. These are obtained by evaluating the generating functionals of the Mori products of quantities related to the relaxation functions in the (PQSCHA) pure self consistent harmonic approximation.
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Taxonomy
TopicsSpectroscopy and Quantum Chemical Studies · Molecular spectroscopy and chirality · Solid-state spectroscopy and crystallography