RIKEN/BNL Lunch Time Talk

"Instantons and sphalerons in magnetic field"

Presented by Grockce Basar, Stony Brook University

Thursday, February 2, 2012, 12:30 pm — Building 510 / Room 2-160

We study the properties of the Euclidean Dirac equation for a light fermion in the presence of both a constant abelian magnetic field and an SU(2) instanton. In particular, we analyze the zero modes analytically in various limits, both on R^4 and on the four-torus, in order to compare with recent lattice QCD results, and study the implications for the electric dipole moment. We also present a holographic computation of the sphaleron rate in a medium with constant magnetic flux. We show that in the strong field limit, the rate has a linear dependence in B.

Hosted by: Zhongbo Kang

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