Anomalous Gluon Production and Condensation in Glasma

Abstract

The collinear color electric and magnetic fields have been discussed to be produced immediately after high energy heavy ion collisions. We discuss anomalous gluon production under the background gauge fields. The gluons are Nielsen-Olesen unstable modes. The production rate of the modes by Schwinger mechanism has recently been found to be anomalously larger than the rate of quarks or other stable gluons. Analyzing classical evolutions of the modes with initial conditions given by vacuum fluctuations, we find that their production makes the color electric field decay very rapidly. The life time of the field is approximately given by the inverse of saturation momentum in the collisions. We also show that the mode with zero momentum form a Bose condensate and its gluon number density grows up to be of the order of $1/{\alpha }_g$. After the saturation of the gluon number density, the condensate melts into quark gluon plasma owing to nonlinear interactions in QCD.

9 pages, 2figures To be published in Phys. Rev. C

References in corpus (12)

• The evolving Glasma
• Bottom-up isotropization in classical-statistical lattice gauge theory
• Bose condensation far from equilibrium
• The initial spectrum of fluctuations in the little bang
• Expanding color flux tubes and instabilities
• Instabilities in non-expanding glasma
• Schwinger mechanism enhanced by the Nielsen--Olesen instability
• Decay of Color Gauge Fields in Heavy Ion Collisions and Nielsen-Olesen Instability
• Thermalization of Color Gauge Fields in High Energy Heavy Ion Collisions
• Fast Vacuum Decay into Quark Pairs in Strong Color Electric and Magnetic Fields
• Schwinger Mechanism with Energy Dissipation in Glasma
• Quark Pair Production in Expanding Glasma

Cited by in corpus (2)

• Schwinger mechanism revisited
• Kinetic evolution of the glasma and thermalization in heavy ion collisions