Please use this identifier to cite or link to this item:
doi:10.22028/D291-26250
Title: | On estimates of the Boltzmann collision operator with cutoff |
Author(s): | Duduchava, Roland Kirsch, Ralf Rjasanow, Sergej |
Language: | English |
Year of Publication: | 2003 |
Free key words: | Boltzmann equation kinetic theory of gases |
DDC notations: | 510 Mathematics |
Publikation type: | Other |
Abstract: | We present new estimates of the Boltzmann collision operator in weighted Lebesgue and Bessel potential spaces. The main focus is put on hard potentials under the assumption that the angular part of the collision kernel fulfills some weighted integrability condition. In addition, the proofs for some previously known \mathbb{L}_{p^{-}} estimates have been considerably shortened and carried out by elementary methods. For a class of metric spaces, the collision integral is seen to be a continous operator into the same space. Furthermore, we give a new pointwise lower bound as well as asymptotic estimates for the loss term without requiring that the entropy is finite. |
Link to this record: | urn:nbn:de:bsz:291-scidok-44434 hdl:20.500.11880/26306 http://dx.doi.org/10.22028/D291-26250 |
Series name: | Preprint / Fachrichtung Mathematik, Universität des Saarlandes |
Series volume: | 97 |
Date of registration: | 5-Jan-2012 |
Faculty: | MI - Fakultät für Mathematik und Informatik |
Department: | MI - Mathematik |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
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preprint_97_03.pdf | 233,2 kB | Adobe PDF | View/Open |
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