Energy dependence of the chiral magnetic effect in expanding holographic plasma

Abstract

Based on a holographic far-from-equilibrium calculation of the chiral magnetic effect~(CME) in an expanding quark gluon plasma, we study collisions at various energies. We compute the time evolution of the CME current in the presence of a time-dependent axial charge density and subject to a time-dependent magnetic field. The plasma expansion leads to a dilution of the CME current. We study distinct combinations of how the initial magnetic field and initial axial charge behave with changing initial energy as proposed in previous literature. Most scenarios we consider lead to an increasing time-integrated CME current, when increasing the initial energy. This would make it more likely to observe the CME at higher collision energies.

18 pages, 6 figures, comments welcome

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Cited by in corpus (12)

• The Present and Future of QCD
• Hot QCD Phase Diagram From Holographic Einstein-Maxwell-Dilaton Models
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
• Hydrodynamic attractors for the speed of sound in holographic Bjorken flow
• Spacetime dynamics of chiral magnetic currents in a hot non-Abelian plasma
• Real-time dynamics of axial charge and chiral magnetic current in a non-Abelian expanding plasma
• Holographic entropy production in a Bjorken expanding hot and dense strongly coupled quantum fluid
• Non-Hermitian Quantum Quenches in Holography
• Stairway to equilibrium entropy
• Strongly interacting matter in extreme magnetic fields
• Topological confinement in Skyrme holography
• Homogeneous isotropization dynamics and entropy production in a hot and dense strongly interacting fluid