2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54163Classical and quantum solutions for the relativistic straight-line string with arbitrary dependence on the world surface curvature are obtained. They differ from the case of the usual Nambu-Goto interaction by the behaviour of the Regge trajectory which in general can be nonlinear. Regularization of the action is considered and comparison with relativistic point with curvature is made.7 pages, latex, no figuresHigh Energy Physics - Theorytext