6 papers
Topological observables and domain wall tension from finite temperature chiral perturbation theory
Zhen-Yan Lu, Quan Tang, Shu-Peng Wang +3
Within the framework of SU(2) chiral perturbation theory, we derive the general solution of the QCD -vacuum for an arbitrary vacuum phase, explicitly incorporating isospin-brea…
Probing the nonstrange quark star equation of state with compact stars and gravitational waves
Shu-Peng Wang, Zhen-Yan Lu, Zhi-Jun Ma +3
A recent study shows that incorporating a new term into the thermodynamic potential density, as required by the thermodynamic consistency criterion, can effectively resolve the the…
QCD axions and domain walls in dense matter under compact stellar conditions
Zhen-Yan Lu, Shu-Peng Wang, Qi Lu +2
In compact stellar environments, the stability of dense QCD matter requires the simultaneous fulfillment of charge neutrality and beta equilibrium. In this work, we study how tempe…
New contribution to the anomalous decay in SU(2) chiral perturbation theory
Zhen-Yan Lu, Shu-Peng Wang, Qi Lu
The introduction of axions gives rise to additional one-loop diagrams for the two-photon decays of neutral pions via axion-pion mixing. We compute this correction that has been ove…
New axion contribution to the two-photon decays of neutral pions
Zhen-Yan Lu, Yang Huang, Ji-Gui Cheng +2
The presence of axions introduces new diagrams at one-loop order to the two-photon decays of the neutral pion through axion-pion mixing. In this work, we calculate this correction,…
QCD topology and axion properties in an isotropic hot and dense medium
Hong-Fang Gong, Qi Lu, Zhen-Yan Lu +3
We study the QCD topology and axion properties at finite temperature and chemical potential in the framework of the two-flavor NambuJona-Lasinio model. We find that the behavior…