Loinaz, WilliamTakeuchi, Tatsu2016-10-182016-10-181999-12-010556-2821http://hdl.handle.net/10919/73252We discuss the choice of gauge field basis in multiple– U(1) gauge theories. We find that there is a preferred basis, specified by the charge orthogonality condition, in which the U(1) gauge fields do not mix under one–loop renormalization group running.4 pagesenIn CopyrightAstronomy & AstrophysicsPhysics, Particles & FieldsPhysicsTOPCOLOR-ASSISTED TECHNICOLORArticle - Refereedhttps://doi.org/10.1103/PhysRevD.60.1150086011