Simulation of heavy ion collision using a time-dependent density functional theory including nuclear superfluidity

TL;DR

This paper presents a simulation method for heavy ion collisions using a novel time-dependent density functional theory that incorporates nuclear superfluidity, enabling detailed analysis of nuclear pairing dynamics during collisions.

Contribution

The paper introduces the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory (Cb-TDHFB) for simulating nuclear dynamics with pairing correlations in three dimensions.

Findings

Demonstrated decreasing and vibrating gap energy during 20O+20O collision

Validated the Cb-TDHFB method for nuclear collision simulations

Showed nuclear pairing effects influence collision dynamics

Abstract

We carried out a simulation of heavy ion collision using a time-dependent density functional theory. We call it the canonical-basis time-dependent Hartree-Fock-Bogoliubov theory (Cb-TDHFB) which can describe nuclear dynamics in three-dimensional coordinate space, treating nuclear pairing correlation. We simulate 20O+20O collision using the Cb-TDHFB with a contact-type pairing functional, and show the behavior of gap energy which is decreasing and vibrating while colliding.