S2. Entropies and Correlations in Complex Systems

Special Session organized by V. Ilić, J. Korbel and S. Gupta

Special section poster

Over the past decades, there has been an unprecedented interest in statistical physics of complex systems that are typically non-additive, nonextensive in Boltzmann-Gibbs framework and that exhibit long-lived non-Boltzmann stationary states accessible to observations. These systems are usually characterized by long-range interactions and/or correlations, path dependence and non-exponential phase-space growth, being studied by means of information theory, non-equilibrium thermodynamics and large deviation theory, as well as by means of generalized thermostatistics which is derived from additive and non-additive generalizations of Boltzmann-Gibbs entropy.
The goal of this section is to gather researchers from statistical physics and information theory communities in order to re-examine the role of generalized entropies and generalized thermostatistics in complex system modeling, with focus on mean-field spin systems, systems with emergent structures, nonequilibrium systems, multifractals, disordered systems, chaotic systems, and complex networks. Particularly, the section aims to explore the interplay between non-additivity, non-extensivity and generalized thermostatistics and to analyze their relationships to information theory and large deviations theory.

A non-exclusive list of topics of interest includes:

- Non-additivity and non-extensivity
- Heavy-tailed and thin-tailed distributions
- Generalized entropies and information measures
- Large deviation theory and central limit theorems

All the researchers from statistical physics and information theory who have an interest in the aforementioned fields are welcome to submit their contributions to this section.


SigmaPhi Prizes

The SigmaPhi Prize for 2020 and SigmaPhi Prize for 2023 have been awarded during SigmaPhi2023 Conference to

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SigmaPhi Awards

During the conference, four works selected out of all the oral and poster presentations have been awarded.

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SigmaPhi 2023 Europhysics Conference

The European Physical Society (EPS) has recognized the SigmaPhi 2023 as Europhysics Conference.

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W1. Quantum Physics and Machine Learning

Workshop organized by:F. Caruso

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W2. Data Science and Econophysics

Workshop organized by:P. Argyrakis

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W3. Complex Networks: Hidden Geometry and Dynamics

Workshop organized by:N. Gupte, M.M. Dankulov and B. Tadic

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W4. Climate and Environment

Workshop organized by:- D. Hristopulos - S. Blesic

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W5. Statistical physics of biophysical systems

Workshop organized by: A. Deutsch and B. Hatzikirou

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W6. Statistical physics methods for power grids

Workshop organized by:G. Odor and C. Beck

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W7. Fluctuations in Physics

Workshop organized by:F. Oliveira

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W8. Thermalization of Nonintegrable Many-Body Systems

Workshop organized by:S. Flach

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W9. Fifty years of the renormalization group

Workshop organized by:A. Aharony

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W10. Non-Extensive Statistical Mechanics and Kappa Distributions

Workshop organized by:G. Livadiotis, M. Leubner, P. Yoon and K. Dialynas

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Scientific Sponsors 2023


Statistical and Nonlinear

Physics Division 

Politecnico di Torino




Roma, Italy


Technical University of

Crete Chania, Greece


Aristotele University of

Thessaloniki, Greece


N.C.S.R. Demokritos

Athens, Greece


University of Leuven


University of Cagliari



AFEA Company

Athens, Greece




MDPI publisher




edp Scince publisher



Springer publisher