title: Coherence and visibility for vectorial light.
abstract: Two-path interference of transversal vectorial waves is embedded within a larger scheme: this is four-path interference between four scalar waves. This comprises previous approaches to coherence between vectorial waves and restores the equivalence between correlation-based coherence and visibility.
authors.affiliation: Departamento de Optica, Facultad de Ciencias Físicas, Universidad Complutense, 28040 Madrid, Spain. alluis@fis.ucm.es
authors.forename: Alfredo
authors.initials: A
authors.lastname: Luis