We introduce a class of models composed by lattices of coupled complex-amplitude oscillators which preserve the norm. These models are particularly well adapted to investigate phenomena described by the nonlinear Schrödinger equation. The coupling between oscillators is parameterized by the...

We report exact analytical expressions locating the 0→1, 1→2 and 2→4 bifurcation curves for a prototypical system of two linearly coupled quadratic maps. Of interest is the precise location of the parameter sets where Naimark–Sacker bifurcations occur, starting from a non-diagonal...

We show that dissipative dynamical systems with constant Jacobian allow one to recover numerical values of control parameters under which the system is operating. This is done by performing measurements on self-similar (fractal) structures in phase space. We illustrate parameter recovery...

In 1963 Myrberg determined a period-doubling cascade of the quadratic map to accumulate at 1.401155189… As found later, the geometric way with which model parameters approach this value has universal behavior and several characteristic exponents associated with it. In the present paper we...

We consider a Brownian particle in a ratchet potential coupled to a modulated environment and subjected to an external oscillating force. The modulated environment is modelled by a finite number N of uncoupled harmonic oscillators. Superdiffusive motion and Levy walks (anomalous random walks)...

The classical transport of particles in multiple asymmetric well potentials is studied through numerical integration of equations of motion. The problem considered is an one-particle system in a multiple asymmetric well potential coupled to harmonic oscillators (the environment) and subjected to...

We describe a novel mechanism for inducing traveling-wave attractors in rings of coupled maps. Traveling waves are easily produced when parameters controlling local dynamics vary from site to site. We also present some statistical results regarding the distribution of periodic time-evolutions.

We prove a theorem establishing a direct link between macroscopically observed periodic motions and certain subsets of intrinsically discrete orbits which are selected naturally by the dynamics from the skeleton of unstable periodic orbits (UPOs) underlying classical and quantum dynamics. As a...

We present a method for investigating the simultaneous movement of all zeros of equations of motions defined by discrete mappings. The method is used to show that knowledge of the interplay of all zeros is of fundamental importance for establishing periodicities and relative stability properties...

This paper describes how certain shrimp-like clusters of stability organize themselves in the parameter space of dynamical systems. Clusters are composed of an infinite affine-similar repetition of a basic elementary cell containing two primay noble points, a head and a tail, defining an axis of...