Sharp decay estimates for hyperbolic balance laws
Date
2009Source
Journal of Differential EquationsVolume
247Issue
2Pages
401-423Google Scholar check
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We consider strictly hyperbolic and genuinely nonlinear systems of hyperbolic balance laws in one-space dimension. Sharp decay estimates are derived for the positive waves in an entropy weak solution. The result is obtained by introducing a partial ordering within the family of positive Radon measures, using symmetric rearrangements and a comparison with a solution of Burgers's equation with impulsive sources as well as lower semicontinuity properties of continuous Glimm-type functionals. © 2009 Elsevier Inc. All rights reserved.