1. RIKEN/BNL Lunch Time Talk

    "The study of decoupling of the mirror fermions via an anomaly free model"

    Presented by Chen Chen, Rensselaer Polytechnic Institute

    Thursday, May 2, 2013, 12:30 pm
    Bldg. 510 / Room 2-160

    Hosted by: Tomomi Ishikawa

    An approach to the formulation of chiral gauge theories on the lattice is to start with a vector- like theory, but decouple one chirality (the "mirror" fermions) using strong Yukawa interactions with a chirally coupled "Higgs" field. While this is an attractive idea, its viability needs to be tested with nonperturbative studies. The model that we studied here, the so- called "3-4-5" model, is anomaly free and the presence of massless states in the mirror sector is not required by anomaly matching arguments, in contrast to the "1-0" model that was studied previously. I will talk about the results we got from the study of the "3-4-5" model, which does not suggest the decoupling of the mirror fermions and therefore no emergence of the chiral gauge theory.