Speaker
Description
Electroweak sphaleron leads to non-conservation of baryon and lepton numbers. Thus, for many baryogenesis scenarios it is crucial to know how active the sphaleron transitions were through out the history of our universe. The Electroweak sphaleron has a magnetic dipole moment and in an external magnetic field the energy of the sphaleron can be lowered affecting the rate at which the transitions can occur. In addition the form of the electroweak phase transition is modified by the presence of an external magnetic field. In this talk I will motivate why it is interesting to look at the electroweak sphaleron in a magnetic field. Then I will present our recent results of computing the sphaleron rate in an external magnetic field through out the electroweak cross over using dynamical lattice simulations.
