Lattice QCD in strong magnetic fields

Details Lattice QCD in strong magnetic fields Lattice QCD in strong magnetic fields

2009-09-09

arxiv.org/abs/0909.1808v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 12 figures, talk given by M. N. Chernodub at the 10th Workshop on Non-Perturbative QCD, June 8-12, 2009, Paris, Fran

Scientific paper

Vacuum of Quantum Chromodynamics in very strong (hadron-scale) magnetic fields exhibits many interesting nonperturbative effects. Some of these effects can be studied with the help of lattice simulations in quenched QCD. We review our recent results demonstrating that very strong external magnetic fields lead to (1) the enhancement of the chiral symmetry breaking [the quark condensate rises with the increase of the external magnetic field]; (2) the chiral magnetization of the QCD vacuum [spins of the quarks turn parallel to the external field]; (3) the chiral magnetic effect [a CP-odd generation of the electric current of quarks directed along the magnetic field]; (4) a CP-odd generation of the anomalous quark electric dipole moment along the axis of magnetic field. The first three effects were already predicted theoretically, and subsequently observed numerically in our simulations, while the fourth effect is a new result.

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