81 citations · 286 across the 11 of their papers we have counts for
9 papers · 1 filter
Evolution in complex systems: record dynamics in models of spin glasses, superconductors and evolutionary ecology
Henrik Jeldtoft Jensen
Recent research on the non-stationary nature of the dynamics of complex systems is reviewed through three specific models. The long time dynamics consists of a slow, decelerating b…
Evolution in complex systems
Paul Anderson, Henrik Jeldtoft Jensen, L. P. Oliveira +1
What features characterise complex system dynamics? Power laws and scale invariance of fluctuations are often taken as the hallmarks of complexity, drawing on analogies with equili…
A new, efficient algorithm for the Forest Fire Model
Gunnar Pruessner, Henrik Jeldtoft Jensen
The Drossel-Schwabl Forest Fire Model is one of the best studied models of non-conservative self-organised criticality. However, using a new algorithm, which allows us to study the…
Anisotropy and universality: the Oslo model, the rice pile experiment and the quenched Edwards-Wilkinson equation
Gunnar Pruessner, Henrik Jeldtoft Jensen
We show that any amount of anisotropy moves the Oslo model to another known universality class, the exponents of which can be derived exactly. This amounts to an exact solution of…
Network properties, species abundance and evolution in a model of evolutionary ecology
Paul Anderson, Henrik Jeldtoft Jensen
We study the evolution of the network properties of a populated network embedded in a genotype space characterised by either a low or a high number of potential links, with particu…
Darwinian Selection and Non-existence of Nash Equilibria
Daniel Eriksson, Henrik Jeldtoft Jensen
We study selection acting on phenotype in a collection of agents playing local games lacking Nash equilibria. After each cycle one of the agents losing most games is replaced by a…