Non-relativistic fermionic energy gap in the non-abelian gauge systems

We demonstrate that the nonrelativistic fermions open the energy gap when the SU([Formula: see text]) gauge bosons, mediating the interaction between fermions, acquire the mass. Surprisingly, even though there is the SU([Formula: see text]) gauge symmetry, there is always one fermionic energy gap which is not degenerate to the rest of the [Formula: see text] fermions for [Formula: see text] in the fundamental representation.