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NA61/SHINE facility at the CERN SPS: beams and detector system
NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisions at the CERN…
Stability transformation: a tool to solve nonlinear problems
Detecting Unstable Periodic Orbits of Chaotic Dynamical Systems
A method to detect the unstable periodic orbits of a chaotic dynamical system is developed. For a given dynamical system our approach allows us to locate the unstable periodic cycles of, in…
Intermittent dynamics of critical fluctuations.
It is argued that the fluctuations of the order parameter in a complex system at the critical point can be described in terms of intermittent dynamics of type I and an algorithm to calculate the isothermal critical exponent delta for a "thermal" critical system is developed.
Measurement of Production Properties of Positively Charged Kaons in Proton-Carbon Interactions at 31 GeV/c
Spectra of positively charged kaons in p+C interactions at 31 GeV/c were measured with the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2007…
Tunable fermi acceleration in the driven elliptical billiard.
The existence of Fermi acceleration is shown thereby refuting the established assumption that smoothly driven billiards whose static counterparts are integrable do not exhibit acceleration dynamics and it is possible to tune the acceleration law in a straightforwardly controllable manner.
GENERAL APPROACH TO THE LOCALIZATION OF UNSTABLE PERIODIC ORBITS IN CHAOTIC DYNAMICAL SYSTEMS
We present a method to detect the unstable periodic orbits of a multidimensional chaotic dynamical system. Our approach allows us to locate in an efficient way the unstable cycles of, in principle,…
Criticality and intermittency in the order parameter space
The helium atom in a strong magnetic field
We investigate the electronic structure of the helium atom in a magnetic field between B = 0 and . The atom is treated as a nonrelativistic system with two interacting electrons and a fixed nucleus.…