Resumen: We show how a deformed composition law of four-momenta can be used to define, at the classical level, a modified notion of spacetime for a system of two particles through the crossing of worldlines in particle interactions. We present a derivation of a generic relativistic isotropic deformed kinematics and discuss the complementarity and relations with other derivations based on kappa-Poincare Hopf algebra or on the geometry of a maximally symmetric momentum space. Idioma: Inglés DOI: 10.1103/PhysRevD.101.044057 Año: 2020 Publicado en: Physical Review D 101, 4 (2020), 044057 [15 pp.] ISSN: 2470-0010 Factor impacto JCR: 5.296 (2020) Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 6 / 29 = 0.207 (2020) - Q1 - T1 Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 15 / 68 = 0.221 (2020) - Q1 - T1 Factor impacto SCIMAGO: 1.887 - Physics and Astronomy (miscellaneous) (Q1)