Remark on the vectorlike nature of electromagnetism and electric charge quantization - art. no. 075013.

In this work we study the structure of electromagnetic interactions and ele ctric charge quantization in gauge theories of electroweak interactions bas ed on semisimple groups. We show that in the standard model of electroweak interactions the structure of electromagnetic interactions is strongly corr elated to the quantization pattern of electric charges. We examine these tw o questions also in all possible chiral bilepton gauge models of electrowea k interactions. In all, we can explain the vectorlike nature of electromagn etic interactions and electric charge quantization together demanding nonva nishing fermion masses and anomaly cancellations. [S0556-2821(99)04917-6].