We compare correlations and coherent structures in nuclei and financial markets. In the nuclear physics part we review giant resonances which can be interpreted as a coherent structure embedded in chaos. With similar methods we investigate the financial empirical correlation matrix of the DAX and Dow Jones. We will show, that if the time-zone delay is properly accounted for, the two distinct markets largely merge into one. This is reflected by the largest eigenvalue that develops a gap relative to the remaining, chaotic eigenvalues. By extending investigations of the specific character of financial collectivity we also discuss the criticality-analog phenomenon of the financial log-periodicity and show specific examples.
@article{arxiv.0910.4348,
title = {Complex Systems: From Nuclear Physics to Financial Markets},
author = {J. Speth and S. Drozdz and F. Gruemmer},
journal= {arXiv preprint arXiv:0910.4348},
year = {2015}
}