Extended parity doublet model with a new transport code

被引：6

作者：

Kim, Myungkuk ^{[1
]}

Jeon, Sangyong ^{[2
]}

Kim, Young-Min ^{[3
]}

Kim, Youngman ^{[4
]}

Lee, Chang-Hwan ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Phys, Busan 46241, South Korea

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[3] Ulsan Natl Inst Sci & Technol, Dept Phys, Ulsan 44919, South Korea

[4] Inst for Basic Sci Korea, Rare Isotope Sci Project, Daejeon 34047, South Korea

来源：

PHYSICAL REVIEW C | 2020年 / 101卷 / 06期

基金：

加拿大自然科学与工程研究理事会; 新加坡国家研究基金会;

关键词：

HEAVY-ION COLLISIONS; ISOSPIN PHYSICS; NUCLEAR-MATTER; EQUATION; SYMMETRY; DYNAMICS;

D O I：

10.1103/PhysRevC.101.064614

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A new transport code "DaeJeon Boltzmann-Uehling-Uhlenbeck" (DJBUU) has been developed and enables us to describe the dynamics of heavy-ion collisions in the low-energy region. To confirm the validity of the new code, we first calculate Au + Au collisions at E-beam = 100A and 400A MeV and also perform the box calculation to check the detail of collisions and Pauli blocking without using a mean-field potential as suggested by the Transport Code Comparison Project. After confirming the validity of new transport code, we study low-energy heavy-ion collisions by using an extended parity doublet model. Since the distinctive feature of the parity doublet model is the existence of the chiral-invariant mass that contributes to the nucleon mass, we investigate how physical quantities depend on the chiral-invariant mass in heavy-ion collisions at low energies. For this, we calculate physical quantities such as the effective nucleon mass in central collisions and transverse flow in semicentral collisions of Au + Au at E-beam = 400A MeV with different values of the chiral-invariant masses.

引用

页数：12

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