{ "id": "1603.00540", "version": "v1", "published": "2016-03-02T01:11:43.000Z", "updated": "2016-03-02T01:11:43.000Z", "title": "A gradient flow approach to the Boltzmann equation", "authors": [ "Matthias Erbar" ], "comment": "30 pages, comments are welcome", "categories": [ "math.AP" ], "abstract": "We show that the spatially homogeneous Boltzmann equation (with constant collision kernel) evolves as the gradient flow of the entropy with respect to a suitable geometry on the space of probability measures. This geometry is given by a new notion of distance between probability measures, which takes the collision process into account. As a first application, we obtain a novel time-discrete approximation scheme for the homogeneous Boltzmann equation.", "revisions": [ { "version": "v1", "updated": "2016-03-02T01:11:43.000Z" } ], "analyses": { "keywords": [ "gradient flow approach", "probability measures", "novel time-discrete approximation scheme", "constant collision kernel", "spatially homogeneous boltzmann equation" ], "note": { "typesetting": "TeX", "pages": 30, "language": "en", "license": "arXiv", "status": "editable" } } }