Time-dependent density functional studies of nuclear quantum dynamics in large amplitudes

TL;DR

This paper applies time-dependent density functional theory to study nuclear quantum dynamics, including fusion and fission reactions, and introduces methods to extract key reaction parameters from microscopic models.

Contribution

It extends TDDFT applications beyond linear regimes to nuclear reactions, providing new methods for analyzing fusion hindrance and fission pathways.

Findings

Microscopic extraction of internuclear potential and inertial mass.

Identification of fusion hindrance mechanisms in heavy systems.

Preliminary results on spontaneous fission path and parameters.

Abstract

The time-dependent density functional theory (TDDFT) provides a unified description of the structure and reaction. The linear approximation leads to the random-phase approximation (RPA) which is capable of describing a variety of collective motion in a harmonic regime. Beyond the linear regime, we present applications of the TDDFT to nuclear fusion and fission reaction. In particular, the extraction of the internuclear potential and the inertial mass parameter is performed using two different methods. A fusion hindrance mechanism for heavy systems is investigated from the microscopic point of view. The canonical collective variables are determined by the adiabatic self-consistent collective coordinate method. Preliminary results of the spontaneous fission path, the potential, and the collective mass parameter are shown for 8Be --> alpha+alpha.