On a three-body confinement force in hadron spectroscopy

Recently it has been argued that a three-body colour confinement interaction
can affect the stability condition of a three-quark system and
the spectrum of a tetraquark described by any constituent quark model.
Here we discuss the role of a three-body colour confinement
interaction in a simple quark model
and present some of its implications for the spectra of baryons, tetraquarks
and six-quark systems.