Work

The linear sigma model at a finite isospin chemical potential

Year: 2006

Type: article

Abstract: The effect of a finite isospin chemical potential on the effective masses of mesons at finite temperature is investigated in the framework of the O (4) linear sigma model with explicit chiral symmetry breaking. We present a mechanism to include the isospin chemical potential in the model. By using the Cornwall–Jackiw–Tomboulis method of composite operators, we obtain a set of gap equations for the effective masses of the mesons and get the numerical results in the Hartree approximation. We find that the introduction of the chemical potential only affects the mass of the charged pions and sigma, while there is almost no effect on the mass of neutral pions.

Source: Journal of Physics G Nuclear and Particle Physics

DOI: 10.1088/0954-3899/32/11/012

Authors: Hong Mao, Nicholas Petropoulos, Song Shu, Wei-Qin Zhao

Institutions: China Center of Advanced Science and Technology, Technological Educational Institute of Central Greece, Hubei University, Chinese Academy of Sciences, Institute of High Energy Physics

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Universidade de Coimbra

OpenAlex ID: W2002548278

FWCI: 1.862

Cites: 27

Cited by: 29

Related to: 10