Measure Valued Solutions to the Spatially Homogeneous Boltzmann Equation Without Angular Cutoff

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Original languageEnglish
Pages (from-to)866-906
Journal / PublicationJournal of Statistical Physics
Issue number5
Online published5 Nov 2016
Publication statusPublished - Dec 2016


A uniform approach is introduced to study the existence of measure valued solutions to the homogeneous Boltzmann equation for both hard potential with finite energy, and soft potential with finite or infinite energy, by using Toscani metric. Under the non-angular cutoff assumption on the cross-section, the solutions obtained are shown to be in the Schwartz space in the velocity variable as long as the initial data is not a single Dirac mass without any extra moment condition for hard potential, and with the boundedness on moments of any order for soft potential.

Research Area(s)

  • Boltzmann equation, Characteristic functions, Homogenuous, Measure valued solutions