title: Are defect models consistent with the entropy and specific heat of glass formers?
abstract: We show that pointlike defect model of glasses cannot explain the thermodynamic properties of glass formers, as for example, the excess specific heat close to the glass transition, contrary to the claim of Garrahan and Chandler [Proc. Natl. Acad. Sci. U.S.A. 100, 9710 (2003)]. More general models and approaches in terms of extended defects are also discussed.
authors.affiliation: Service de Physique de Théorique, Orme des Merisiers, Commissariat à l'Energie Atomique Saclay, 91191 Gif sur Yvette Cedex, France. biroli@spht.saclay.cea.fr
authors.forename: Giulio
authors.initials: G
authors.lastname: Biroli
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Bouchaud
authors.forename: Gilles
authors.initials: G
authors.lastname: Tarjus