Regularity of solutions to scalar conservation laws with a force
- Authors: Benjamin Gess, Xavier Lamy
- Preprint year: 2017
- First public date: 2017-07-21
- arXiv: 1707.06866
- Status: Published
- Publication type: Journal article
- Publication year: 2019
- Journal: Annales de l'Institut Henri Poincaré / C, 36 (2019) 2, pp. 505-521
- DOI: 10.1016/j.anihpc.2018.07.002
Abstract
We prove regularity estimates for entropy solutions to scalar conservation laws with a force. Based on the kinetic form of a scalar conservation law, a new decomposition of entropy solutions is introduced, by means of a decomposition in the velocity variable, adapted to the non-degeneracy properties of the flux function. This allows a finer control of the degeneracy behavior of the flux. In addition, this decomposition allows to make use of the fact that the entropy dissipation measure has locally finite singular moments. Based on these observations, improved regularity estimates for entropy solutions to (forced) scalar conservation laws are obtained.