title: Two-time Green's functions and the spectral density method in nonextensive classical statistical mechanics.
abstract: The two-time retarded and advanced Green's function technique is formulated in nonextensive classical statistical mechanics within the optimal Lagrange multiplier framework. The main spectral properties are presented and a spectral decomposition for the spectral density is obtained. Finally, the nonextensive version of the spectral density method is given and its effectiveness is tested by exploring the equilibrium properties of a classical ferromagnetic spin chain.
authors.affiliation: Dipartimento di Fisica E. R. Caianiello, Università degli Studi di Salerno, I-84081 Baronissi, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Cavallo
authors.forename: F
authors.initials: F
authors.lastname: Cosenza
authors.forename: L
authors.initials: L
authors.lastname: De Cesare