Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-LPTMC
Subjects cond-mat.mes-hall
Date Monday 3 February 2020
Time 10:45
Institute LPTMC
Seminar Room Jussieu tower 13-12 5th floor room 5-23
Speaker's Last Name Nogueira
Speaker's First Name Alvaro L. M. A.
Speaker's Email Address almanogueira [at] gmail [dot] com
Speaker's Institution CEFET, Rio de Janeiro, Brasil
Title Extended-supersymmetric framework and graphene-like fermionic degrees of freedom: an example of worthiness
Abstract We present an N=2-supersymmetric extension [1] of Jackiw-Pi´s chiral gauge theory (CGT) [2] originally designed to describe Dirac electrons in graphene. The augmented framework allows for the identification of non-perturbative solutions, as vortex-like configurations that saturate a topologically non-trivial (BPS- )bound are proven to be. Remarkably, that regime reveals to be free from extra scalar degrees of freedom brought about to the model as needed partners to fermions in such a linear realisation of supersymmetry, but lacking a phenomenological interpretation. Furthermore, inherent R-Parity provides the room for incorporating a global phase-fermion number symmetry already manifest in the CGT, but now regarded as an external (superspace) invariance. Comments on the fermionic mass-matrix and perspectives shall compose our conclusions. [1] E.M.C. Abreu, M.A. De Andrade, L.P.G. De Assis, J.A. Helayël-Neto, A.L.M.A. Nogueira, R.C. Paschoal, Annals of Physics 354 (2015) 618–636. [2] R. Jackiw, S.-Y. Pi, Phys. Rev. Lett. 98 (2007) 266402.
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