2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54836In this paper we describe a covariant canonical formalism for a free time-like (massive) as well as space-like (tachyonic) particle in the framework of nonstandard synchronization scheme. In this scheme one is able to introduce absolute causality without breaking the Poincaré invariance.LaTeX file, 7 pp., no figuresHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext