Correlations within the Non-Equilibrium Green's Function Method
Abstract
Non-equilibrium Green's Function (NGF) method is a powerful tool for studying the evolution of quantum many-body systems. Different types of correlations can be systematically incorporated within the formalism. The time evolution of the single-particle Green's functions is described in terms of the Kadanoff-Baym equations. The current work initially focuses on introducing the correlations within infinite nuclear matter in one dimension and then in a finite system in the NGF approach. Starting from the harmonic oscillator Hamiltonian, by switching on adiabatically the mean-field and correlations simultaneously, a correlated state with ground-state characteristics is arrived at within the NGF method. Furthermore the use of cooling to for improving the adiabatic switching is explored.
Cite
@article{arxiv.1707.07355,
title = {Correlations within the Non-Equilibrium Green's Function Method},
author = {M. H. Mahzoon and P. Danielewicz and A. Rios},
journal= {arXiv preprint arXiv:1707.07355},
year = {2018}
}
Comments
Contribution to Proc. 5th Conference on Nuclei and Mesoscopic Physics, E Lansing, 6-10 March 2017; 9 pages, 8 figures