Eur. Phys. J. A (2009) 39: 145-148
https://doi.org/10.1140/epja/i2008-10720-5

Letter

A new energy-dependent quark interaction from a Tamm-Dancoff reduction of an effective field theory quark model

Departamento de Física, Universidad Nacional de Colombia, Bogotá D. C., Colombia

^* e-mail: mdesanctis@unal.edu.co

Received: 23 October 2008
Revised: 3 December 2008
Accepted: 22 December 2008
Published online: 21 January 2009

Abstract

A new quark interaction is derived, by means of a Tamm-Dancoff reduction, from an effective field theory constituent quark model. In contrast to the standard Coulombic potential, the obtained interaction is nonlocal and energy dependent. Furthermore, it becomes positive and rises up to a maximum value when the interquark distance increases, partially resembling some aspects of the phenomenological Cornell potential.