Schwinger pair production in the evolving glasma generates hundreds of quarks and antiquarks per unit rapidity in central Pb-Pb collisions, with momentum broadening and spin randomization before hydrodynamics begins.
Quark pair creation in color electric fields and effects of magnetic fields
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abstract
The time evolution of a system where a uniform and classical SU(3) color electric field and quantum fields of quarks are dynamically coupled with each other is studied focusing on non-perturbative pair creation and its back reaction. We characterize the color direction of the electric field in a gauge invariant way, and investigate its dependence. Momentum distributions of created quarks show plasma oscillation as well as quantum effects such as the Pauli blocking and interference. Pressure of the system is also calculated, and we show that pair creation moderates degree of anisotropy of pressure. Furthermore, enhancement of pair creation and induction of chiral charge under a color magnetic field which is parallel to the electric field are discussed.
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Non-perturbative quark production and transport in the evolving glasma: the WAGASHI event generator
Schwinger pair production in the evolving glasma generates hundreds of quarks and antiquarks per unit rapidity in central Pb-Pb collisions, with momentum broadening and spin randomization before hydrodynamics begins.