25 citations · 49 across the 6 of their papers we have counts for
6 papers
Burst statistics of fluctuations in a simple magnetized torus configuration
K. Rypdal, T. Zivkovic, L. Oestvand
In a toroidal plasma confined by a purely toroidal magnetic field the plasma transport is governed by electrostatic turbulence driven by the flute interchange instability on the lo…
Modeling temporal fluctuations in avalanching systems
Martin Rypdal, Kristoffer Rypdal
We demonstrate how to model the toppling activity in avalanching systems by stochastic differential equations (SDEs). The theory is developed as a generalization of the classical m…
Scale-free vortex cascade emerging from random forcing in a strongly coupled system
Kristoffer Rypdal, Boris Kozelov, Svetlana Ratynskaia +2
The notions of self-organised criticality (SOC) and turbulence are traditionally considered to be applicable to disjoint classes of phenomena. Nevertheless, scale-free burst statis…
Evidence of low-dimensional chaos in magnetized plasma turbulence
Tatjana Zivkovic, Kristoffer Rypdal
We analyze probe data obtained from a toroidal magnetized plasma configuration suitable for studies of low-frequency gradient-driven instabilities. These instabilities give rise to…
A stochastic theory for temporal fluctuations in self-organized critical systems
Martin Rypdal, Kristoffer Rypdal
A stochastic theory for the toppling activity in sandpile models is developed, based on a simple mean-field assumption about the toppling process. The theory describes the process…
Stretched exponential relaxation and ac universality in disordered dielectrics
Alexander V. Milovanov, Jens Juul Rasmussen, Kristoffer Rypdal
This paper is concerned with the connection between the properties of dielectric relaxation and ac (alternating-current) conduction in disordered dielectrics. The discussion is div…