Séminaire de Physique ThéoriqueExpectation value of the axial-vector current in the external electromagnetic field
Ara Ioannisian (Yerevan Phys. Inst.).
Friday 21 March 2014 14:00 - Tours - Salle 1180 (Bât E2)
We are calculated the expectation value of the axial-vector current induced by the vacuum polarization effect of the Dirac field in constant external electromagnetic field. In calculations we use Schwinger's proper time method. The effective Lagrangian has very simple Lorenz invariant form. Along with the anomaly term, it also contains two Lorenz invariant terms. The result is compared with our previous calculation of the photon - Z boson mixing in the magnetic field. Phenomenological aspects of the result is discussed.