Quark electric dipole moment induced by magnetic field
P.V. Buividovich, M.N. Chernodub, E.V. Luschevskaya, M.I. Polikarpov
TL;DR
This paper demonstrates through numerical simulations that quarks acquire an electric dipole moment aligned with strong magnetic fields, caused by topological charge fluctuations, revealing a CP-odd effect analogous to the Chiral Magnetic Effect.
Contribution
It introduces a numerical demonstration of quark electric dipole moments induced by magnetic fields, linking topological fluctuations to CP-odd effects in QCD.
Findings
Quarks develop an electric dipole moment in strong magnetic fields.
The effect is related to local topological charge fluctuations.
It is an analogue of the Chiral Magnetic Effect in QCD.
Abstract
We show numerically that quarks develop an electric dipole moment in the direction of a sufficiently intense magnetic field due to local fluctuations of topological charge. This anomalous CP-odd effect is a spin analogue of the Chiral Magnetic Effect in QCD.
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