Resumen: In this work we discuss the deformed relativistic wave equations, namely the Klein–Gordon and Dirac equations in a doubly special relativity scenario. We employ what we call a geometric approach, based on the geometry of a curved momentum space, which should be seen as complementary to the more spread algebraic one. In this frame we are able to rederive well-known algebraic expressions, as well as to treat yet unresolved issues, to wit, the explicit relation between both equations, the discrete symmetries for Dirac particles, the fate of covariance, and the formal definition of a Hilbert space for the Klein–Gordon case. Idioma: Inglés DOI: 10.1088/1361-6382/acb4d4 Año: 2023 Publicado en: Classical and Quantum Gravity 40, 5 (2023), 054001 [23 pp.] ISSN: 0264-9381 Factor impacto JCR: 3.6 (2023) Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 25 / 112 = 0.223 (2023) - Q1 - T1 Categ. JCR: QUANTUM SCIENCE & TECHNOLOGY rank: 13 / 26 = 0.5 (2023) - Q2 - T2 Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 11 / 31 = 0.355 (2023) - Q2 - T2 Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 24 / 84 = 0.286 (2023) - Q2 - T1 Factor impacto CITESCORE: 7.0 - Physics and Astronomy (miscellaneous) (Q1)