Sphaleron Transition Rates and the Chiral Magnetic Effect
arXiv:2012.13784 · doi:10.1142/S0218301322500100
Abstract
The chiral magnetic effect is a novel quantum phenomenon proposed for high-energy nuclear collisions but which has yet to be observed. We quantify the axial charge relaxation time, due to sphalerons, which enters in simulations of this effect. An extrapolation of weak coupling calculations of the sphaleron rate yields rather different relaxation times than strong coupling AdS/CFT calculations. The AdS/CFT relaxation time is the larger one of the two by an order of magnitude, but the weak coupling relaxation time may not be reliable because it is only marginally bigger than the microscopic thermalization time. The role of quark masses has yet to be accurately assessed.
11 pages, 5 figures, published version
References in corpus (10)
- The Chiral Magnetic Effect
- Minkowski-space correlators in AdS/CFT correspondence: recipe and applications
- Angular momentum conservation in heavy ion collisions at very high energy
- Polarization probes of vorticity in heavy ion collisions
- The Sphaleron Rate in SU(N) Gauge Theory
- Global polarization measurement in Au+Au collisions
- Approach to equilibrium in weakly coupled nonabelian plasmas
- The ideal relativistic spinning gas: polarization and spectra
- Matching Excluded Volume Hadron Resonance Gas Models and Perturbative QCD to Lattice Calculations
- Non-equilibrium study of the Chiral Magnetic Effect from real-time simulations with dynamical fermions