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Clément Sire

26
Documents
Identifiants chercheurs

Présentation

After a Ph.D. on the electronic properties and the stability of quasicrystals (1990; ENS Paris & Univ. P. & M. Curie), I spent two years at the AT&T Bell Labs (NJ, USA). There, I worked on high-Tc superconductivity but also started working on nonequilibrium statistic physics, which has since become my main domain of research: stochastic processes and their physical applications, phase separation and coarsening systems, physics of society, and behavioral biology...

Publications

926460

Phase transitions in self-gravitating systems and bacterial populations surrounding a central body

Pierre-Henri Chavanis , Julien Sopik , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2024, 109 (1), pp.014118. ⟨10.1103/PhysRevE.109.014118⟩
Article dans une revue hal-04185196v1

Effective merging dynamics of two and three fluid vortices: Application to two-dimensional decaying turbulence

Clément Sire , Pierre-Henri Chavanis , Julien Sopik
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2011, 84, pp.056317. ⟨10.1103/PhysRevE.84.056317⟩
Article dans une revue hal-00493280v1

Exact analytical solution of the collapse of self-gravitating Brownian particles and bacterial populations at zero temperature

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2011, 83 (3), pp.031131. ⟨10.1103/PhysRevE.83.031131⟩
Article dans une revue hal-00526890v1

Critical mass of bacterial populations in a generalized Keller-Segel model. Analogy with the Chandrasekhar limiting mass of white dwarf stars

Pierre-Henri Chavanis , Clément Sire
Physica A: Statistical Mechanics and its Applications, 2008, 387 (8-9), pp.1999-2009. ⟨10.1016/j.physa.2007.10.075⟩
Article dans une revue hal-00158432v1

Critical dynamics of self-gravitating Langevin particles and bacterial populations

Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2008, 78, pp.061111. ⟨10.1103/PhysRevE.78.061111⟩
Article dans une revue hal-00318716v1

Jeans type analysis of chemotactic collapse

Pierre-Henri Chavanis , Clément Sire
Physica A: Statistical Mechanics and its Applications, 2008, 387 (16-17), pp.4033-4052. ⟨10.1016/j.physa.2008.02.025⟩
Article dans une revue hal-00169682v1

Logotropic distributions

Pierre-Henri Chavanis , Clément Sire
Physica A: Statistical Mechanics and its Applications, 2007, 375, pp.140. ⟨10.1016/j.physa.2006.08.076⟩
Article dans une revue hal-00109033v1

Kinetic and hydrodynamic models of chemotactic aggregation

Pierre-Henri Chavanis , Clément Sire
Physica A: Statistical Mechanics and its Applications, 2007, 384 (2), pp.199-222. ⟨10.1016/j.physa.2007.05.069⟩
Article dans une revue hal-00158430v1

Virial theorem and dynamical evolution of self-gravitating Brownian particles in an unbounded domain : I. Overdamped models

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2006, 73, pp.066103. ⟨10.1103/PhysRevE.73.066103⟩
Article dans une revue hal-00123745v1

Virial theorem and dynamical evolution of self-gravitating Brownian particles in an unbounded domain: II. Inertial models

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2006, 73, pp.066104. ⟨10.1103/PhysRevE.73.066104⟩
Article dans une revue hal-00109031v1

Dynamics of the Bose-Einstein condensation: analogy with the collapse dynamics of a classical self-gravitating Brownian gas

Julien Sopik , Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2006, 74, pp.011112. ⟨10.1103/PhysRevE.74.011112⟩
Article dans une revue hal-00079074v1

On the interpretations of Tsallis functional in connection with Vlasov-Poisson and related systems: Dynamics vs thermodynamics

Pierre-Henri Chavanis , Clément Sire
Physica A: Statistical Mechanics and its Applications, 2005, 356, pp.419. ⟨10.1016/j.physa.2005.03.046⟩
Article dans une revue hal-00004882v1

Self-gravitating Brownian systems and bacterial populations with two or more types of particles

Julien Sopik , Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2005, 72, pp.026105. ⟨10.1103/PhysRevE.72.026105⟩
Article dans une revue hal-00004883v1

Postcollapse dynamics of self-gravitating Brownian particles and bacterial populations

Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2004, 69, pp.066109. ⟨10.1103/PhysRevE.69.066109⟩
Article dans une revue hal-00004877v1

Anomalous diffusion and collapse of self-gravitating Langevin particles in D dimensions

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2004, 69, pp.016116. ⟨10.1103/PhysRevE.69.016116⟩
Article dans une revue hal-00004876v1

Gravitational collapse of a Brownian gas

Clément Sire , Pierre-Henri Chavanis
Banach Center Publications, 2004, 66, pp.287
Article dans une revue hal-00004881v1

On the analogy between self-gravitating Brownian particles and bacterial populations

Pierre-Henri Chavanis , Magali Ribot , C. Rosier , Clément Sire
Banach Center Publications, 2004, 66, pp.103
Article dans une revue hal-00004880v1

Estimate of blow-up and relaxation time for self-gravitating Brownian particles and bacterial populations

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2004, 70, pp.026115. ⟨10.1103/PhysRevE.70.026115⟩
Article dans une revue hal-00004878v1

Thermodynamics and collapse of self-gravitating Brownian particles in D dimensions

Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2002, 66, pp.046133. ⟨10.1103/PhysRevE.66.046133⟩
Article dans une revue hal-00004874v1

Thermodynamics of self-gravitating systems

Pierre-Henri Chavanis , Carole Rosier , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2002, 66, pp.036105. ⟨10.1103/PhysRevE.66.036105⟩
Article dans une revue hal-00004873v1

Scaling laws and vortex profiles in 2D decaying turbulence

Jean-Philippe Laval , Pierre-Henri Chavanis , Bérengère Dubrulle , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2001, 63, pp.065301. ⟨10.1103/PhysRevE.63.065301⟩
Article dans une revue hal-00004870v1

The spatial correlations in the velocities arising from a random distribution of point vortices

Pierre-Henri Chavanis , Clément Sire
Physics of Fluids, 2001, 13, pp.1904
Article dans une revue hal-00139162v1

Statistics of velocity fluctuations arising from a random distribution of point vortices: The speed of fluctuations and the diffusion coefficient

Pierre-Henri Chavanis , Clément Sire
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2000, 62, pp.490. ⟨10.1103/PhysRevE.62.490⟩
Article dans une revue hal-00004868v1

Numerical renormalization group of vortex aggregation in 2D decaying turbulence: The role of three-body interactions

Clément Sire , Pierre-Henri Chavanis
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2000, 61, pp.6644-6653. ⟨10.1103/PhysRevE.61.6644⟩
Article dans une revue hal-00004869v1

Collapse and evaporation of a canonical self-gravitating gas

Clément Sire , Pierre-Henri Chavanis
12th Marcel Grossmann Meeting on General Relativity and Gravitation, Jul 2009, Paris, France
Communication dans un congrès hal-00461637v1
Image document

COLLAPSE AND EVAPORATION OF A CANONICAL SELF-GRAVITATING GAS

Clément Sire , Pierre-Henri Chavanis
Twelfth Marcel Grossmann Meeting, The: On Recent Developments In Theoretical And Experimental General Relativity, Astrophysics And Relativistic Field Theories (In 3 Volumes) - Proceedings Of The Mg12 Meeting On General Relativity (World Scientific, 2012), 2012
Chapitre d'ouvrage hal-02337235v1