About the Authors

Guido Caldarelli

Affiliations IMT - Institutions Market Technology, Lucca, Italy, ISC-CNR - Institute of Complex Systems, Rome, Italy, LIMS - London Institute for Mathematical Sciences, London, United Kingdom

Matthieu Cristelli

matthieu.cristelli@roma1.infn.it

Affiliations ISC-CNR - Institute of Complex Systems, Rome, Italy, Department of Physics, University of Rome “Sapienza”, Rome, Italy

Andrea Gabrielli

Affiliations ISC-CNR - Institute of Complex Systems, Rome, Italy, LIMS - London Institute for Mathematical Sciences, London, United Kingdom

Luciano Pietronero

Affiliations ISC-CNR - Institute of Complex Systems, Rome, Italy, Department of Physics, University of Rome “Sapienza”, Rome, Italy, LIMS - London Institute for Mathematical Sciences, London, United Kingdom

Antonio Scala

Affiliations ISC-CNR - Institute of Complex Systems, Rome, Italy, LIMS - London Institute for Mathematical Sciences, London, United Kingdom

Andrea Tacchella

Affiliations Department of Physics, University of Rome “Sapienza”, Rome, Italy, ISC-CNR - Institute of Complex Systems, Rome, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: GC MC AG LP AS AT. Contributed reagents/materials/analysis tools: GC MC AG LP AS AT. Wrote the paper: GC MC AG LP AS AT.