2. Kappa Plasmas

Workshop organized by: M. Lazar and V. Pierrard


Lorentzian (Kappa) distributions as an advanced tool of statistical modeling and analysis of the solar wind

The so-called Kappa distribution functions are generalized power-laws that provide valuable description for the particle energy spectra in space plasmas. In plasmas where collisions are rare, the independence of particles breaks down due to long-range correlations supplied by the fields and plasma instabilities, and classical statistics cannot reproduce the observed distributions of Kappa-type. Power-law distributions can instead result from a generalized statistics for the charged particles with long-range correlations, which contribute to a super-extensive entropy and implies generalization of the plasma temperature to non-thermal quasi-stationary states.
However, we are still far from a complete and rigorous understanding of these models, and significant issues are still to be addressed, covering all the fundamental and observational aspects:

- Generalized statistics for particle systems out of thermal equilibrium involving long-range interactions (Coulomb, gravitational, etc.) as providing fundamental explanation for Kappa distributions in natural plasmas systems

- Thermodynamical implications, moments of the Kappa distributions and limitations by the power-index

- Evidences of Kappa distributions in space plasmas: integrating and fitting observational data with advanced 3D or 2D (gyrotropic) Kappa models; temperature anisotropy; strahl (beaming) component

- Generation of Kappa distributions in theory and numerical simulations: particle acceleration and pitch-angle scattering by self-generated fields and wave instabilities (beams/counterstreams relaxation and wave decay from large to small scales)

- Origin of the Kappa distributions in the solar wind and terrestrial magnetosphere; coronal scenario and implications.


SigmaPhi Prize

The SigmaPhi Prize for 2017 will be awarded during SigmaPhi2017 Conference to Ralf Metzler, David Mukamel and Stefano Ruffo.

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School of Statistical Physics

New Trends in StatPhys: Organized by G. Caldarelli and G. Kaniadakis

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EPS Young Researcher Grants

The Organizing Committee of the SigmaPhi 2017 International Conference is very please to inform that the EPS Young Researcher Grants have been assigned

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Elsevier lectures

The publishing company Elsevier sponsors two lectures

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Springer Nature Lectures

The publishing company Springer Nature sponsors three lectures

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EPS-SNP Meeting

The summer board meeting of the European Physical Society - Statistical and Nonlinear Physics Division (EPS-SNP) will be held during the SigmaPhi2017 Conference

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SigmaPhi2017 Europhysics Conference

The European Physical Society (EPS) has recognized the SigmaPhi2017 as Europhysics Conference.

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1. Kappa Distributions and Statistical Mechanics

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

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2. Statistical Physics for the Digital Economy

Workshop organized by: T. Aste, G. Caldarelli, T. Di Matteo and G. Livan

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3. Quantum Matter

Workshop organized by: S. Kourtis, D. Ellinas and J. Pachos

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4. Statistical Physics of Environment, Climate and Ecosystems

Workshop organized by: P. Ditlevsen, D. Hristopulos and D. Valenti

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5. Complexity and self-organization in biology and physiology

Workshop organized by: P. Paradisi and R. Metzler

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6. Sociophysics and Econophysics

Workshop organized by: M.L. Bertotti and V. Constantoudis

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Special Sessions

A1. Stochastic Processes in Complex Environments

Special Session organized by: J. Talbot and C. Mejia-Monasterio

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A2. Kinetic Theory and its applications

Special Session organized by: G. Palasanzas and A. Rossani

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A3. Information Geometry

Special Session organized by: D. Johnston, H. Matsuzoe, G. Ruppeiner and T. Wada

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Scientific Sponsors 2017

 Statistical and Nonlinear

Physics Division 

Politecnico di Torino




 Department of Applied

Science and Technology



Roma, Italy

 Technical University of

Crete Chania, Greece

 Aristotele University of

Thessaloniki, Greece

N.C.S.R. Demokritos

Athens, Greece

Italian National Institute

for Nuclear Physics


University of Cagliari




University of Leuven
















Chaos, Solitons

& Fractals


Modern Physics

Letters B


International Journal

of Modern Physics B