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Chiral Alfvén Wave in Anomalous Hydrodynamics
1Department of Physics, Keio University, Yokohama 223-8522, Japan.
Physical Review Letters
|November 10, 2015
Summary
Researchers discovered a new transverse wave in hot chiral plasmas, influenced by magnetic fields and chiral effects. This "chiral Alfvén wave" offers insights into fluid dynamics and gravitational anomalies.
Area of Science:
- Condensed matter physics
- High-energy physics
- Plasma physics
Background:
- Chiral plasmas exhibit unique behaviors under external fields.
- Previous studies identified chiral magnetic and vortical waves.
- Understanding collective excitations is key to plasma dynamics.
Purpose of the Study:
- To investigate the hydrodynamic regime of chiral plasmas at high temperatures.
- To identify novel collective excitations induced by chiral effects and magnetic fields.
- To characterize the properties and velocity of these new excitations.
Main Methods:
- Analysis of the hydrodynamic regime of chiral plasmas.
- Theoretical investigation of collective excitations in the presence of chiral effects and magnetic fields.
- Derivation of the wave's velocity and its relation to the gravitational anomaly coefficient.
Main Results:
- Discovery of a new type of gapless collective excitation.
- Identification of a transverse wave, termed 'chiral Alfvén wave'.
- The wave's velocity is proportional to the gravitational anomaly coefficient and exists in incompressible fluids.
Conclusions:
- The chiral Alfvén wave is a novel phenomenon in chiral plasma physics.
- This excitation differs from previously known chiral magnetic and vortical waves.
- Potential relevance in various physical systems warrants further investigation.
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