Towards thermalization in heavy-ion collisions: CGC meets the 2PI formalism

Abstract

We propose to apply the two-particle irreducible (2PI) formalism to the problem of thermalization in heavy-ion collisions in the Color Glass Condensate (CGC) picture. We consider the 2PI effective action to three loops and derive a set of coupled equations for the classical Yang-Mills field and the quantum fluctuations in the boost invariant coordinate system. The initial condition and the relation to previous works are also discussed.

23 pages, 4 figures; v2: Version to appear in Nuclear Physics A

References in corpus (9)

• The Color Glass Condensate
• Initial Singularity of the Little Bang
• Bottom-up isotropization in classical-statistical lattice gauge theory
• Turbulence in nonabelian gauge theory
• Role of quantum fluctuations in a system with strong fields: Onset of hydrodynamical flow
• Chaotic behavior in classical Yang-Mills dynamics
• Quantum field thermalization in expanding backgrounds
• Ward Identities for the 2PI effective action in QED
• Entropy Production in Gluodynamics in temporal axial gauge in 2+1 dimensions

Cited by in corpus (14)

• QCD thermalization: Ab initio approaches and interdisciplinary connections
• Nonlinear amplification of instabilities with longitudinal expansion
• Over-populated gauge fields on the lattice
• Hadron production in pA collisions at the LHC from the Color Glass Condensate
• The non-linear Glasma
• Non-renormalizability of the classical statistical approximation
• Evolution to the Quark-Gluon Plasma
• Initial State Quantum Fluctuations in the Little Bang
• Some Aspects of the Theory of Heavy Ion Collisions
• Non-equilibrium fluctuation-dissipation relation from holography
• Thermalization of overpopulated systems in the 2PI formalism
• Nonequilibrium 2PI evolution of the O(N) model with longitudinal expansion
• Shear viscosity of classical Yang-Mills field
• Kinetic theory of a longitudinally expanding system