Speaker
Description
Heavy-ion collisions have been used to study quark-gluon plasma (QGP) and can be used to study strong electromagnetic (EM) fields. Because the EM fields penetrate the QGP medium, their evolutions are coupled together. In turn, probes like the flow of direct photons and charged particles will be modified by the coupling [1, 2]. Usually, the EM field modifications are considered separately from the evolution of the QGP. Instead, we model the dynamic evolution of the QGP and EM fields together using relativistic resistive magneto-hydrodynamics (RRMHD) [3]. Our RRMHD model is unique for heavy-ion collisions because it includes a finite scalar electrical conductivity. That conductivity acts as dissipation between the EM fields and the QGP. We demonstrate how the charged particle directed flow (v1) could also be used as an observable for QGP conductivity. Additionally, we apply the same model to calculate a potentially cleaner observable, the direct photon elliptic flow (v2). Because the QGP and EM fields are connected through the same conductivity for both calculations, we will compare and discuss the preferred values of both.
[1] Sun and Yan, Phys. Rev.C 109, 034917 (2024).
[2] Gursoy, Kharzeev, and Rajagopal, Phys. Rev.C 89, 054905 (2014),
[3] Nakamura, Miyoshi, Nonaka, and Takahashi, Phys.Rev.C 107, 014901 (2023).
Nakamura, Miyoshi, Nonaka, and Takahashi, Eur.Phys. J.C 83, 229 (2023).
Nakamura, Miyoshi, Nonaka, and Takahashi, Phys.Rev.C 107, 034912 (2023).
| Category | Theory |
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