Comment on "The relativistic particle with curvature and torsion of   world trajectory"
  Gogilidze and Surovtsev have claimed recently (hep-th/9809191) that the tachyonic sector can be removed from the spectrum of the relativistic particle with curvature and torsion by a proper gauge choice. We show that the mass-spin dependence obtained by them is incorrect and point out that their gauge surface does not cross all the gauge orbits. We discuss the nature of the tachyonic sector of the model and argue why it cannot be removed by any gauge fixing procedure. 
Mikhail Plyushchay