Charge separation induced by P-odd bubbles in QCD matter

By D. Kharzeev, A. Zhitnitsky. 2007

456 citations recorded by the source corpus.

Abstract We examine the recent suggestion that P - and CP -odd effects in QCD matter can induce electric charge asymmetry with respect to reaction plane in relativistic heavy ion collisions. General arguments are given which confirm that the angular momentum of QCD matter in the presence of nonzero topological charge should induce an electric field aligned along the axis of the angular momentum. A simple formula relating the magnitude of charge asymmetry to the angular momentum and topological charge is derived. The expected asymmetry is amenable to experimental observation at RHIC and LHC; we discuss the recent preliminary STAR result in light of our findings. Possible implications of charge separation phenomenon in cosmology and astrophysics are discussed as well.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ee9f4d950ad442ec5bcc05af39f43f0f3386187b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. K. Landsteiner
2. I. Shovkovy
3. N. Xu
4. D. Mateos
5. Diego Trancanelli
6. V. A. Miransky
7. V. Koch
8. J. Liao

Citations in the corpus

• Thermodynamics and instabilities of a strongly coupled anisotropic plasma (2011, background): “It has been suggested that ‘bubbles’ or regions with a spacetime-dependent theta-angle, θ(t, x), may be formed in heavy ion collisions [52, 53, 54, 55, 56, 57].”
• Holographic gravitational anomaly and chiral vortical effect (2011, background): “a vortex in the fluid induces a current parallel to the axial vorticity vector ω = ǫuν∂ρuλ, and related effects of the presence of angular momentum had been discussed before in a purely field theoretical setup in [12] and [18].”
• Particle Production in Strong Electromagnetic Fields in Relativistic Heavy-Ion Collisions (2013, methodology): “This is an order of magnitude higher than the estimate ρ 0 ∼ α of electric field due to CME effect as proposed in [68].”
• Mapping the phases of quantum chromodynamics with beam energy scan (2019, background): “The counterpart of the CME in chiral matter under fluid rotation, is the so-called Chiral Vortical Effect (CVE) [131–134].”
• Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals (2015, background): “The chiral magnetic effect [21, 37, 38] and the chiral separation e ffect [14, 39, 40] are the two important examples of such phenom a that take place at nonzero density.”