title: Dust ion-acoustic solitary waves in a dusty plasma with nonextensive electrons.
abstract: The dust-modified ion-acoustic waves of Shukla and Silin are revisited within the theoretical framework of the Tsallis statistical mechanics. Nonextensivity may originate from correlation or long-range plasma interactions. Interestingly, we find that owing to electron nonextensivity, dust ion-acoustic (DIA) solitary waves may exhibit either compression or rarefaction. Our analysis is then extended to include self-consistent dust charge fluctuation. In this connection, the correct nonextensive electron charging current is rederived. The Korteweg-de Vries equation, as well as the Korteweg-de Vries-Burgers equation, is obtained, making use of the reductive perturbation method. The DIA waves are then analyzed for parameters corresponding to space dusty plasma situations.
authors.affiliation: Plasma Physics Group, Theoretical Physics Laboratory, Faculty of Sciences-Physics, University of Bab-Ezzouar, USTHB, El-Alia, Algiers, Algeria.
authors.forename: Mustapha
authors.initials: M
authors.lastname: Bacha
authors.forename: Mouloud
authors.initials: M
authors.lastname: Tribeche
authors.forename: Padma Kant
authors.initials: PK
authors.lastname: Shukla