A particle-dynamics study of dissipation in colliding clouds of ultracold fermions (Articolo in rivista)

Type
Label
  • A particle-dynamics study of dissipation in colliding clouds of ultracold fermions (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1098/rsta.2004.1412 (literal)
Alternative label
  • Succi S., Toschi F., Capuzzi P., Vignolo P., Tosi M.P. (2004)
    A particle-dynamics study of dissipation in colliding clouds of ultracold fermions
    in Philosophical Transactions of the Royal Society of London, Series A: Mathematical and Physical Sciences
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Succi S., Toschi F., Capuzzi P., Vignolo P., Tosi M.P. (literal)
Pagina inizio
  • 1605 (literal)
Pagina fine
  • 1612 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 362 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per le Applicazioni del Calcolo, CNR, Viale del Policlinico 137, 00161 Roma, Italy NEST-INFM and Classe di Scienze, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy INFM, Unitá di Tor Vergata, 00133 Roma, Italy (literal)
Titolo
  • A particle-dynamics study of dissipation in colliding clouds of ultracold fermions (literal)
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. (literal)
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