Static potential in scalar QED(3) with non-minimal coupling


Autoria(s): Dalmazi, D.; Mendonca, Elias L.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/09/2006

Resumo

Here we compute the static potential in scalar QED(3) at leading order in 1/Nf. We show that the addition of a non-minimal coupling of Pauli-type (is an element of(mu nu alpha)j(mu)partial derivative(nu)A(alpha)), although it breaks parity, it does not change the analytic structure of the photon propagator and consequently the static potential remains logarithmic ( confining) at large distances. The non-minimal coupling modifies the potential, however, at small charge separations giving rise to a repulsive force of short range between opposite sign charges, which is relevant for the existence of bound states. This effect is in agreement with a previous calculation based on Moller scattering, but differently from such calculation we show here that the repulsion appears independently of the presence of a tree level Chern-Simons term which rather affects the large distance behaviour of the potential turning it into a constant.

Formato

11091-11099

Identificador

http://dx.doi.org/10.1088/0305-4470/39/35/010

Journal of Physics A-mathematical and General. Bristol: Iop Publishing Ltd, v. 39, n. 35, p. 11091-11099, 2006.

0305-4470

http://hdl.handle.net/11449/34024

10.1088/0305-4470/39/35/010

WOS:000239933300011

Idioma(s)

eng

Publicador

Iop Publishing Ltd

Relação

Journal of Physics A: Mathematical and General

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article