Electric and magnetic conductivities in magnetized fermion systems

Constraints on Fermion Magnetic and Electric Moments from Lep-i

The effective Lagrangian approach allows us to constrain fermion magnetic and electric moments using LEP-I data. We improve some of the previous limits on these moments. † Research supported by a F.P.I. grant from the Universitat Autònoma de Barcelona. E-mail address: [email protected] ‡ E-mail address: [email protected] ∗ Work partially supported by the research project CICYT-AEN90-0019.

Fermion Wavefunctions in Magnetized branes: Theta identities and Yukawa couplings

Computation of Yukawa couplings, determining superpotentials as well as the Kähler metric, with oblique (non-commuting) fluxes in magnetized brane constructions is an interesting unresolved issue, in view of the importance of such fluxes for obtaining phenomenologically viable models. In order to perform this task, fermion (scalar) wavefunctions on toroidally compactified spaces are presented f...

Magnetic and metal-insulator transitions in coupled spin-fermion systems

R. Mondaini,1,2 T. Paiva,3 and R. T. Scalettar2 1Physics Department, The Pennsylvania State University, 104 Davey Laboratory, University Park, Pennsylvania 16802, USA 2Physics Department, University of California, Davis, California 95616, USA 3Instituto de Fı́sica, Universidade Federal do Rio de Janeiro Cx.P. 68.528, 21941-972 Rio de Janeiro RJ, Brazil (Received 14 August 2014; published 14 Octo...

Thermodynamics of Electric and Magnetic Systems

Fermion Mass Hierarchy and Electric Dipole Moments

We show that in supersymmetric models with a gauged flavor symmetry explaining the hierarchy of fermion masses and mixings, the electron, muon and the neutron acquire sizable electric dipole moments (EDM) through loop diagrams involving the flavor gaugino/gauge boson near the Planck scale. These EDMs are proportional to the phases in the fermion Yukawa couplings and are typically much larger th...