Charge-dependent flow induced by electromagnetic fields in heavy ion collisions

Abstract

The colliding heavy ions create extremely strong magnetic and electric fields that significantly affect the evolution of the produced quark-gluon plasma (QGP). The knowledge of these fields is essential for establishing the role of topological fluctuations in the QGP through the chiral magnetic effect and related anomaly-induced phenomena. In this talk, we describe our work on the evolution of the QGP in electric and magnetic fields in the framework of hydrodynamics supplemented, in a perturbative fashion, by the dynamical electromagnetism. The evolution of the QGP fluid is described within the iEBE-VISHNU framework. We find that the electromagnetically induced currents result in a charge-odd directed flow $\Delta v_1$ and a charge-odd $\Delta v_3$ flow both of which are odd in rapidity. While the predicted magnitude of these charge-odd flows agrees with the data from RHIC and LHC, the sign of the predicted asymmetry between the flows of positive and negative hadrons is opposite to the data.

arXiv comment4 pages, 3 figures, contribution to the proceedings of Quark Matter 2019 conference

References in corpus (12)

• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Estimate of the magnetic field strength in heavy-ion collisions
• Parity violation in hot QCD: why it can happen, and how to look for it
• QCD Equation of State and Hadron Resonance Gas
• Chiral Magnetic Wave
• Magnetohydrodynamics, charged currents and directed flow in heavy ion collisions
• Chiral magnetic wave at finite baryon density and the electric quadrupole moment of quark-gluon plasma in heavy ion collisions
• Synchrotron radiation by fast fermions in heavy-ion collisions
• Charge-dependent Flow Induced by Magnetic and Electric Fields in Heavy Ion Collisions
• Probing the effects of strong electromagnetic fields with charge-dependent directed flow in Pb-Pb collisions at the LHC
• First observation of the directed flow of $D^0$ and $\overline{D^0}$ in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200~GeV

Cited by in corpus (2)

• Charge-dependent directed flows in heavy-ion collisions by Boltzmann-Maxwell equations
• Electric and magnetic conductivities in magnetized fermion systems