Related Experiment Video
Updated: Aug 23, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
A particle-dynamics study of dissipation in colliding clouds of ultracold fermions
Sauro Succi1, Federico Toschi, Pablo Capuzzi
1Istituto per le Applicazioni del Calcolo, CNR, Roma, Italy. succi@iac.rm.cnr.it
Abstract:
We present a numerical study of the micro-dynamical roots of dissipation in two colliding mesoscopic clouds of point-like fermions as a function of the scattering length and of temperature approaching full quantum degeneracy. This study, which is motivated by current experiments on ultracold gaseous mixtures of fermionic atoms inside magnetic traps, combines the solution of the coupled Vlasov-Landau equations for the Wigner distribution functions with a locally adaptive importance-sampling technique for handling collisional interactions. The results illustrate the consequences of genuinely quantum collisional phenomena, and in particular the role of Pauli blocking in the transition to hydrodynamic behaviour. We also compare the computed quantum collision rate as a function of temperature in the weak-coupling case with theoretical results assuming that equilibrium distributions determine the quantum collision integral.
Related Concept Videos
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Basic Postulates of Kinetic Molecular Theory: Particle Size, Energy, and Collision
Collisions in Multiple Dimensions: Introduction
First Law: Particles in Two-dimensional Equilibrium
Newton's first law tells us about the...
Phase Transitions: Vaporization and Condensation
First Law: Particles in One-dimensional Equilibrium

