Quark propagator and di-lepton production rate in a hot, dense and very strongly magnetized rotating Quark-Gluon Plasma

In this paper, a theoretical calculation of thermal di-lepton production rate (DPR) is reported from a hot and dense, unbounded rotating quark gluon plasma in the presence of very strong uniform background magnetic field typically generated at heavy-ion collision experiments. In this extreme magnetic field, the quarks as well as anti-quarks are approximated to be confined in the lowest Landau level (LLL). Firstly, I have converted the expression of the quark propagator in LLL approximation to the momentum space representation. After that, using the derived quark propagator, the di-lepton production rate is calculated from the photon polarization tensor (PPT) with the help of the framework of thermal field theory. The system is first confined in a cylinder of radius $R_{\perp}$ and then $R_{\perp}$ is taken to be very large in order to consider the situation of unbounded system. Depending on the charge of participating quarks, the role of rotation is to alter the chemical potential. The DPR is suppressed prominently for low invariant mass with respect to the LLL-approximated non-rotating case that was reported earlier.Comment: 24 pages, 6 figures, 3 tables; Comments are welcome and highly appreciate

Neutral pion mass in warm magnetized medium within Linear Sigma Model coupled to Quarks (LSMq)\left(\text{LSM}_q\right) framework

We study the neutral pion mass in the presence of an external arbitrary magnetic field in the framework of the linear sigma model coupled to quark (LSMq) at finite temperature. In doing so, we have calculated the pion self-energy, constructed the dispersion equation via re-summation, and solved the dispersion relation at zero three momentum limit. In calculating the pion mass, we have included meson self-coupling's thermal and magnetic contribution and approximate chiral order parameter $v_0$. We report that the $\pi^0$ mass decreases with the magnetic field and increases with temperature.Comment: 26 pages, 7 captioned figure