Disoriented Chiral Condensate and Strong Electromagnetic Fields

Abstract

We discuss the effect of strong electromagnetic fields on chiral orientation in the framework of the linear $\sigma$ model. Based on lessons we learn from computation of the effective potential at one loop, we argue that the chiral U(1) anomaly dominates chiral disorientation driven by electromagnetism. We show that the anomaly effect induces a quasi-instantaneous ``kick'' to field configurations along the ${\pi }^0$ direction in relativistic heavy ion collisions. We discuss the possibility that a ``kick'', even though small in magnitude, can have a substantial effect on the formation of chirally misaligned domains.

minor corrections only, 10 pages, REVTeX

References in corpus (4)

• Emergence of Coherent Long Wavelength Oscillations After a Quench: Application to QCD
• How to Make Large Domains of Disoriented Chiral Condensate
• How Disoriented Chiral Condensates Form: Quenching vs. Annealing
• Dynamics of a Disoriented Chiral Condensate

Cited by in corpus (19)

• Chiral Magnetic conductivity
• A systematic study of magnetic field in Relativistic Heavy-ion Collisions in the RHIC and LHC energy regions
• Disoriented Chiral Condensate: Theory and Experiment
• Dynamics of the Chiral Magnetic Effect in a weak magnetic field
• Recent progresses on QCD phases in a strong magnetic field -- views from Nambu--Jona-Lasinio model
• Electromagnetic triangle anomaly and neutral pion condensation in QCD vacuum
• Non-Equilibrium Production of Photons via π^0\to 2γin DCC's
• Effect of the Wood-Saxon nuclear distribution on the chiral magnetic field in Relativistic Heavy-ion Collisions
• Hadronic Observables: Theoretical Highlights
• Initial Time Singularities in Non-Equilibrium Evolution of Condensates and Their Resolution in the Linearized Approximation
• Anomaly Induced Domain Formation of Disoriented Chiral Condensates
• Dynamical Pion Production via Parametric Resonance from Disoriented Chiral Condensate
• Photon Production from Nonequilibrium Disoriented Chiral Condensates in a Spherical Expansion
• Anomalous Pseudoscalar-Photon Vertex In and Out of Equilibrium
• Experimental Signatures of Anomaly Induced DCC Formation
• Non-Central Heavy-Ion Collisions are the Place to Look for DCC
• Magnetic field in nuclear collisions at ultra high energies
• Out-of-equilibrium Photon Production from Disoriented Chiral Condensates
• Negative Elliptic Flow from Anomaly Induced DCC Formation