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Axial Current Generation by P-Odd Domains in QCD Matter
Ioannis Iatrakis1, Shu Lin2, Yi Yin3
1Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA.
Physical Review Letters
|July 22, 2015
Summary
Topological domains breaking QCD symmetries generate an axial current. This finding, verified in a holographic model, has implications for heavy-ion collisions.
Area of Science:
- High Energy Physics
- Quantum Chromodynamics (QCD)
- Condensed Matter Theory
Background:
- Topological domains in Quantum Chromodynamics (QCD) can break fundamental symmetries like parity (P) and charge-parity (CP).
- Understanding the real-time dynamics of these domains is crucial for interpreting experimental results.
Purpose of the Study:
- To derive the generation of an axial current from the dynamics of topological domains breaking P and CP symmetry.
- To quantify the strength of the induced axial current.
- To explore the connection between domain dynamics and the chiral magnetic effect.
Main Methods:
- General theoretical derivation of axial current generation.
- Verification using a top-down holographic model.
- Analysis of real-time dynamics.
Main Results:
- Local topological domains breaking P and CP symmetry induce a net axial current.
- The strength of this induced axial current is quantified.
- A relationship between domain dynamics and the chiral magnetic field is established.
Conclusions:
- The induced axial current from topological domain dynamics is a significant theoretical finding.
- This phenomenon is relevant and potentially observable in heavy-ion collision experiments.
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