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Finite time blow-up and condensation for the bosonic Nordheim equation


The homogeneous bosonic Nordheim equation is a kinetic equation describing the dynamics of the distribution of particles in the space of moments for a homogeneous, weakly interacting, quantum gas of bosons. We show the existence of classical solutions of the homogeneous bosonic Nordheim equation that blow up in finite time. We also prove finite time condensation for a class of weak solutions of the kinetic equation.

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This work has been supported by DGES Grant 2011-29306-C02-00, Basque Government Grant IT641-13, the Hausdorff Center for Mathematics of the University of Bonn and the Collaborative Research Center The Mathematics of Emergent Effects (DFG SFB 1060, University of Bonn). The authors thank the hospitality of the Isaac Newton Institute of the University of Cambridge where this work was begun.

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Escobedo, M., Velázquez, J.J.L. Finite time blow-up and condensation for the bosonic Nordheim equation. Invent. math. 200, 761–847 (2015).

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