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A new approach to solve the Boltzmann-Langevin equation for fermionic systems
Rizzo J., Chomaz P., Colonna M.
Nuclear Physics A 806 (2008) 79-104 - http://hal.in2p3.fr/in2p3-00262058
Physique/Physique Nucléaire Théorique
A new approach to solve the Boltzmann-Langevin equation for fermionic systems
J. Rizzo1, 2, Ph. Chomaz3, M. Colonna1
1 :  LNS - Laboratori Nazionali del Sud
http://www.lns.infn.it
INFN
Via Santa Sofia 62 95123 Catania
Italie
2 :  Dipartimento di Fisica
Universita' di Firenze
Italie
3 :  GANIL - Grand Accélérateur National d'Ions Lourds
http://www.ganil-spiral2.eu
CNRS : UPR3266 – IN2P3 – CEA : DSM/GANIL
Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5
France
We present a new method to introduce phase-space fluctuations in transport theories, corresponding to a full implementation of the Boltzmann-Langevin equation for fermionic systems. It is based on the procedure originally developed by Bauer et al. for transport codes employing the test particle method. In the new procedure, the Pauli principle is carefully checked, leading to a good reproduction of the correct fluctuations in the ``continuum limit'' ($h \to 0$). Accurate tests are carried out in one and two dimensional idealized systems, and finally results for a full 3D application are shown. We stress the reliability of this method, which can be easily plugged into existing tranport codes using test particles, and its general applicability to systems characterized by instabilities, like for instance multifragmentation processes.

Articles dans des revues avec comité de lecture
2008
Nuclear Physics A (Nucl. Phys. A)
Publisher Elsevier
ISSN 0375-9474 
806
79-104

24.10.Cn; 24.60.ky; 25.70.Pq
submitted to Nucl. Phys. A
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0802.0377