About the Authors

David F. Klosik

klosik@itp.uni-bremen.de

Affiliation Institute for Theoretical Physics, University of Bremen, Bremen, Germany

Stefan Bornholdt

Affiliation Institute for Theoretical Physics, University of Bremen, Bremen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SB DFK. Performed the experiments: DFK. Analyzed the data: DFK. Wrote the paper: SB DFK.