51 citations · 68 across the 3 of their papers we have counts for
3 papers
Excitable human dynamics driven by extrinsic events in massive communities
Joachim Mathiesen, Luiza Angheluta, Peter T. H. Ahlgren +1
Using empirical data from a social media site (Twitter) and on trading volumes of financial securities, we analyze the correlated human activity in massive social organizations. Th…
Fear and its implications for stock markets
Ingve Simonsen, Peter Toke Heden Ahlgren, Mogens H. Jensen +2
The value of stocks, indices and other assets, are examples of stochastic processes with unpredictable dynamics. In this paper, we discuss asymmetries in short term price movements…
Anomalous Transport in Conical Granular Piles
Peter Ahlgren, Mikkel Avlund, Ib Klewe +2
Experiments on 2+1-dimensional piles of elongated particles are performed. Comparison with previous experiments in 1+1 dimensions shows that the addition of one extra dimension to…