Beyond mean-field description of break-up, transfer and fusion

TL;DR

This paper develops advanced microscopic theories beyond mean-field to better understand nuclear reactions, including pairing, collisions, and fluctuations, providing improved descriptions of nuclear break-up, transfer, and fusion processes.

Contribution

It introduces stochastic mean-field theory incorporating fluctuations and zero point motion, enhancing the modeling of nuclear dynamics beyond traditional mean-field approaches.

Findings

Pairing significantly affects nuclear break-up.

Fluctuations are accurately described by stochastic mean-field theory.

Diffusion coefficients and mass distributions are quantitatively estimated.

Abstract

Microscopic theories beyond mean-field are developed to include pairing, in-medium nucleon-nucleon collisions as well as effects of initial fluctuations of one-body observables on nuclear dynamics. These theories are applied to nuclear reactions. The role of pairing on nuclear break-up is discussed. By including the effect of zero point motion of collective variables through a stochastic mean-field theory, not only average evolution of one-body observables are properly described but also fluctuations. Diffusion coefficients in fusion as well as mass distributions in transfer reactions are estimated.