2012/06/01 by Angel E. Obispo, Obispo, Angel E., Marcelo Hott +1
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Geophysical and Geoelectrical Methods #Graphene research and applications #High Energy Physics - Theory (hep-th) #Quantum and electron transport phenomena #hep-th
paper · pdf · doi:10.48550/arxiv.1206.0289
19 pages, 1 figure
arxiv created 2012/06/01 · openalex publication_date 2012/06/01 · arxiv updated 2012/06/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We show that fermion charge fractionalization can take place in a recently proposed chiral gauge model for graphene even in the absence of Kekulé distortion of the graphene honeycomb lattice. We extend the model by adding the coupling of fermions to an external magnetic field and show that the fermion charge can be fractionalized by means of only gauge potentials. It is shown that the chiral fermion charge can also have fractional value. We also relate the fractionalization of the fermion charge to the parity anomaly in an extended Quantum Electrodynamics which involves vector and vector-axial gauge fields.