Spectroscopy of phase transitions for multiagent systems.

@article{Zagli2021SpectroscopyOP,
  title={Spectroscopy of phase transitions for multiagent systems.},
  author={Niccol{\`o} Zagli and Valerio Lucarini and Grigorios A. Pavliotis},
  journal={Chaos},
  year={2021},
  volume={31 6},
  pages={
          061103
        }
}
In this paper, we study phase transitions for weakly interacting multiagent systems. By investigating the linear response of a system composed of a finite number of agents, we are able to probe the emergence in the thermodynamic limit of a singular behavior of the susceptibility. We find clear evidence of the loss of analyticity due to a pole crossing the real axis of frequencies. Such behavior has a degree of universality, as it does not depend on either the applied forcing or on the… 
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