Continuum study on QCD phase diagram through an OPE-modified gluon propagator
| Autor: | Xiao-Jun Liu, Hong-Shi Zong, Shu-Sheng Xu, Yi-Lun Du, Chao Shi |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Quark Particle physics Phase transition 010308 nuclear & particles physics High Energy Physics::Lattice High Energy Physics::Phenomenology Propagator FOS: Physical sciences Curvature 01 natural sciences Deconfinement Gluon Strange matter High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Operator product expansion 010306 general physics |
| DOI: | 10.48550/arxiv.1602.00062 |
| Popis: | Within the Dyson-Schwinger equations (DSEs) framework, a gluon propagator model incorporating quark's feedback through operator product expansion (OPE) is introduced to investigate the QCD phase diagram in the temperature--chemical-potential ($T-\mu$) plane. Partial restoration of chiral symmetry at zero temperature and finite temperature are both studied, suggesting a first order phase transition point on the $\mu$ axis and a critical end point at $(T_E,\mu_E)/T_c = (0.85,1.11)$, where $T_c$ is the pseudo-critical temperature. In addition, we find the pseudo-critical line can be well parameterized with the curvature parameter $\kappa$ and a consistent decrease in $\kappa$ with more of gluon propagator distributed to quark's feedback. Comment: 9 pages, 8 figures |
| Databáze: | OpenAIRE |
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