title: Interacting elastic lattice polymers: a study of the free energy of globular rings.
abstract: We introduce and implement a Monte Carlo scheme to study the equilibrium statistics of polymers in the globular phase. It is based on a model of "interacting elastic lattice polymers" and allows a sufficiently good sampling of long and compact configurations, an essential prerequisite to study the scaling behavior of free energies. By simulating interacting self-avoiding rings at several temperatures in the collapsed phase, we estimate both the bulk and the surface free energy. Moreover from the corresponding estimate of the entropic exponent α-2 we provide evidence that, unlike for swollen and Θ-point rings, the hyperscaling relation is not satisfied for globular rings.
authors.affiliation: Department of Physics and Astronomy, University of Padua, and INFN, Sezione di Padova,Via Marzolo 8, I-35131 Padova, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Baiesi
authors.affiliation: Department of Physics and Astronomy, University of Padua, and INFN, Sezione di Padova,Via Marzolo 8, I-35131 Padova, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Orlandini
mesh_terms: D000465:Algorithms; D004548:Elasticity; D019277:Entropy; D008956:Models, Chemical; D015233:Models, Statistical; D009010:Monte Carlo Method; D011108:Polymers / Q000737:chemistry*; D013696:Temperature
chemical_list: D011108:Polymers