3 citations · 3 across the 2 of their papers we have counts for
4 papers · 1 filter
Phase transitions in self-gravitating systems and bacterial populations surrounding a central body
P. H. Chavanis, J. Sopik, C. Sire
We study the nature of phase transitions in a self-gravitating classical gas in the presence of a central body. The central body can mimic a black hole at the center of a galaxy or…
Distance traveled by random walkers before absorption in a random medium
David S. Dean, Clément Sire, Julien Sopik
We consider the penetration length of random walkers diffusing in a medium of perfect or imperfect absorbers of number density . We solve this problem on a lattice and in th…
Dynamics of the Bose-Einstein condensation: analogy with the collapse dynamics of a classical self-gravitating Brownian gas
Julien Sopik, Clement Sire, Pierre-Henri Chavanis
We consider the dynamics of a gas of free bosons within a semi-classical Fokker-Planck equation for which we give a physical justification. In this context, we find a striking simi…
Self-gravitating Brownian systems and bacterial populations with two or more types of particles
Julien Sopik, Clement Sire, Pierre-Henri Chavanis
We study the thermodynamical properties of a self-gravitating gas with two or more types of particles. Using the method of linear series of equilibria, we determine the structure a…