%0 Journal Article %A Navarro, Miguel %A Aldaya Valverde, Víctor %A Calixto Molina, Manuel %T Relativistic field equations from higher-order polarizations of the Poincaré group %D 1998 %@ 0034-4877 %U http://hdl.handle.net/10317/521 %U arXiv:hep-th/9612189v2 %X The theory of free relativistic fields is shown to arise in a unified manner from higher-order, configuration-space, irreducible representations of the Poincar´e group. A de Sitter subalgebra, in the massive case, and a Poincaré subalgebra, in the massless case, of the enveloping algebra of the Poincaré group are the suitable higher-order polarizations. In particular, a simple group-theoretic derivation of the Dirac equation is given. %K Matemática Aplicada %K Poincaré %K Subálgebra %K Ecuación Dirac %~ GOEDOC, SUB GOETTINGEN