Propagating torsion in 3D gravity and dynamical mass generation

Authors: Boldo J.L.¹; Helayël-Neto J.A.²; Panza N.²

Source: Classical and Quantum Gravity, Volume 19, Number 8, 2002 , pp. 2201-2209(9)

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Abstract:

In this paper, fermions are minimally coupled to 3D gravity with dynamical torsion. A Kalb-Ramond field is also introduced and non-minimally coupled to the fermions in a gauge-invariant way. We show that a 1-loop mass generation mechanism takes place for both the 2-form gauge field and the torsion. As for the fermions, no mass is dynamically generated: at 1-loop, there is only a fermion mass shift proportional to the Yukawa coupling whenever these fermions have a non-vanishing tree-level mass.

Language: English

Document Type: Miscellaneous

Affiliations: 1: Universidade Federal do Espírito Santo (UFES), Departamento de Física (CCE), Campus Universitário de Goiabeiras, 29060-900, Vitória, ES, Brazil 2: Universidade Católica de Petrópolis (UCP), Grupo de Física Teórica, Rua Barão do Amazonas, 124, 25685-070, Petrópolis, RJ, Brazil

Publication date: 2002-01-01