Dynamical magnetic fields in heavy-ion collisions

• DOI: 10.1103/physrevc.107.034901
• Publication Date: 2023-03-01T15:02:39Z
• Authors: Anping Huang; Duan She; Shuzhe Shi; Mei Huang; Jinfeng Liao
• Keywords: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); Nuclear Theory; 0103 physical sciences; FOS: Physical sciences; 01 natural sciences

The magnetic fields in heavy-ion collisions are important ingredients for many interesting phenomena, such as the chiral effect, wave, directed flow ${v}_{1}$ of ${D}^{0}$ mesons, and splitting spin polarization $\mathrm{\ensuremath{\Lambda}}/\overline{\mathrm{\ensuremath{\Lambda}}}$. Quantitative studies these however, suffer from limited understanding dynamical evolution medium created by collisions, which remains a critical challenging problem. initial colliding nuclei decay very fast vacuum but their lifetime could be extended through response due to electrically conducting quarks antiquarks. Here we perform detailed analysis effect on numerically solving Maxwell's equations concurrently with expanding described viscous hydrodynamics, under assumption negligible back reaction fluid evolution. Our results suggest considerable enhancement late time fields, magnitude depends sensitively fireball expansion well electric conductivity both before during hydrodynamic stage.