Eur. Phys. J. C (2015) 75: 238
https://doi.org/10.1140/epjc/s10052-015-3470-1

Regular Article - Theoretical Physics

Topologically massive spin-1 particles and spin-dependent potentials

Centro Brasileiro de Pesquisas Físicas (CBPF), Rua Dr Xavier Sigaud 150, Urca, Rio de Janeiro, CEP 22290-180, Brazil

^* e-mail: pcmalta@cbpf.br

Received: 28 April 2015
Accepted: 19 May 2015
Published online: 29 May 2015

Abstract

We investigate the role played by particular field representations of an intermediate massive spin-1 boson in the context of spin-dependent interparticle potentials between fermionic sources in the limit of low momentum transfer. The comparison between the well-known case of the Proca field and that of an exchanged spin-1 boson (with gauge-invariant mass) described by a 2-form potential mixed with a 4-vector gauge field is established in order to pursue an analysis of spin- as well as velocity-dependent profiles of the interparticle potentials. We discuss possible applications and derive an upper bound on the product of vector and pseudo-tensor coupling constants.