The evolution of Information entropy components in Relativistic Heavy-Ion Collisions

TL;DR

This paper investigates the evolution of different components of information entropy in relativistic heavy-ion collisions at RHIC using the AMPT model, revealing that total entropy reflects physical processes more accurately.

Contribution

It introduces a combined analysis of thermal, multiple, and configuration entropy components to better understand the physical information in heavy-ion collisions.

Findings

Four stages of entropy evolution correspond to physical processes.

Total entropy provides a more accurate reflection of physical information.

The study enhances understanding of entropy dynamics in relativistic collisions.

Abstract

Shannon information entropy provides an effective tool to study the evolution process in relativistic heavy-ion collisions. The time evolution process of thermodynamic entropy $S_{\rm thermal}$, multiple entropy $S_{\rm mul}$, and configuration entropy $S_{\rm conf}$ at RHIC is studied using the AMPT model to generate central Au-Au collisions. By superimposing the three kinds of information entropy, we can get a more complete information entropy of the system to describe the physical information of the relativistic heavy ion collision. The results show that the four stages of the time evolution process of the system entropy $S$ seem to correspond to the four physical processes in the relativistic heavy ion collision, indicating that the total entropy of the system can reflect the physical information in the relativistic heavy ion collision more accurately.