Work

Equation of state and surface tension of QCD in the first order phase transition region

Year: 2026

Type: article

Abstract: We build up a complete description of QCD phase structure by applying the parametrization of the chiral and deconfinement order parameters upon the calculations from functional QCD approaches. In particular in the first order phase transition region at high chemical potential, both the phase transition line using Maxwell construction and the coexistence boundary lines from the spinodal decomposition are determined. We compute the thermodynamic quantities including the number density, the energy density, the pressure, and also the free energy for both stable and unstable phases of QCD. Additionally, after applying a phenomenological description of the inhomogeneity of the QCD free energy, we obtain the surface tension of the first order phase transition of QCD.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/nx7r-4ffq

Authors: Yuan-jun Mei, Yi Lu, Fei Gao, Yu-xin Liu

Institutions: Beijing Institute of Technology, Peking University, Collaborative Innovation Center of Quantum Matter

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: National Natural Science Foundation of China

Awards: G401811171, G5246638008, G8773653998