title: Realizability condition for electromagnetic Schell-model sources.
abstract: The set of functions that appear in the correlation matrix of an electromagnetic source must satisfy the constraint of nonnegative definiteness. Here we derive a necessary and sufficient condition for nonnegativeness for the class of electromagnetic Schell-model sources. This result also suggests a possible synthesis procedure for this type of source. As an illustration, two specific examples of electromagnetic Schell-model sources are discussed.
authors.affiliation: Università Roma Tre, Dipartimento di Fisica, and CNISM, Via della Vasca Navale 84, Rome, Italy. gori@uniroma3.it
authors.forename: F
authors.initials: F
authors.lastname: Gori
authors.forename: M
authors.initials: M
authors.lastname: Santarsiero
authors.forename: R
authors.initials: R
authors.lastname: Borghi
authors.forename: V
authors.initials: V
authors.lastname: Ramírez-Sánchez