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- Stéphane Cueille, Clément Sire
- 1997

We consider the scaling solutions of Smoluchowski’s equation of irreversible aggregation, for a non gelling collision kernel. The scaling mass distribution f(s) diverges as s−τ when s → 0. τ is non… (More)

- Clément Sire
- Physical review. E, Statistical, nonlinear, and…
- 2002

We introduce an approximation specific to a continuous variable formulation of directed percolation, which is strictly equivalent to (1+1)-dimensional directed bond percolation. We find that the… (More)

- Clément Sire
- Physical review letters
- 2007

We present an approximate calculation for the distribution of the maximum of a smooth stationary temporal signal X(t). As an application, we compute the persistence exponent associated with the… (More)

- Clément Sire
- 2000

This paper is devoted to a statistical analysis of the velocity fluctuations arising from a random distribution of point vortices in two-dimensional turbulence. Exact results are derived for the… (More)

- Pierre-Henri Chavanis, Clément Sire
- Physical review. E, Statistical, nonlinear, and…
- 2004

We address the generalized thermodynamics and the collapse of a system of self-gravitating Langevin particles exhibiting anomalous diffusion in a space of dimension D. This is a basic model of… (More)

- Pierre-Henri Chavanis, Carole Rosier, Clément Sire
- Physical review. E, Statistical, nonlinear, and…
- 2002

We study the thermodynamics and the collapse of a self-gravitating gas of Brownian particles. We consider a high-friction limit in order to simplify the problem. This results in the… (More)

- Daniel S. Calovi, Ugo Lopez, Paul Schuhmacher, Hugues Chaté, Clément Sire, Guy Theraulaz
- Journal of the Royal Society, Interface
- 2015

Fish schools are able to display a rich variety of collective states and behavioural responses when they are confronted by threats. However, a school's response to perturbations may be different… (More)

- Pierre-Henri Chavanis, Clément Sire
- Physical review. E, Statistical, nonlinear, and…
- 2006

We propose a general kinetic and hydrodynamic description of self-gravitating Brownian particles in d dimensions. We go beyond the usual approximations by considering inertial effects and finite-N… (More)

- Clément Sire, Pierre-Henri Chavanis
- Physical review. E, Statistical, nonlinear, and…
- 2002

We address the thermodynamics and the collapse of a self-gravitating gas of Brownian particles in D dimensions, in both canonical and microcanonical ensembles. We study the equilibrium density… (More)

- Li Jiang, Luca Giuggioli, +5 authors Guy Theraulaz
- PLoS Computational Biology
- 2017

Schools of fish and flocks of birds can move together in synchrony and decide on new directions of movement in a seamless way. This is possible because group members constantly share directional… (More)