{ "id": "cond-mat/0205356", "version": "v2", "published": "2002-05-16T22:16:52.000Z", "updated": "2002-09-11T14:03:04.000Z", "title": "Sensitivity to initial conditions at bifurcations in one-dimensional nonlinear maps: rigorous nonextensive solutions", "authors": [ "F. Baldovin", "A. Robledo" ], "comment": "latex, 4 figures. Updated references and some general presentation improvements. To appear published in Europhysics Letters", "journal": "Europhys. Lett. {\\bf 60}, 518 (2002).", "doi": "10.1209/epl/i2002-00249-7", "categories": [ "cond-mat.stat-mech" ], "abstract": "Using the Feigenbaum renormalization group (RG) transformation we work out exactly the dynamics and the sensitivity to initial conditions for unimodal maps of nonlinearity $\\zeta >1$ at both their pitchfork and tangent bifurcations. These functions have the form of $q$-exponentials as proposed in Tsallis' generalization of statistical mechanics. We determine the $q$-indices that characterize these universality classes and perform for the first time the calculation of the $q$-generalized Lyapunov coefficient $\\lambda_{q} $. The pitchfork and the left-hand side of the tangent bifurcations display weak insensitivity to initial conditions, while the right-hand side of the tangent bifurcations presents a `super-strong' (faster than exponential) sensitivity to initial conditions. We corroborate our analytical results with {\\em a priori} numerical calculations.", "revisions": [ { "version": "v2", "updated": "2002-09-11T14:03:04.000Z" } ], "analyses": { "keywords": [ "initial conditions", "one-dimensional nonlinear maps", "rigorous nonextensive solutions", "tangent bifurcations display weak insensitivity" ], "tags": [ "journal article" ], "note": { "typesetting": "LaTeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }