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arxiv: physics/9710034 · v1 · pith:YIXOEGOVnew · submitted 1997-10-24 · ⚛️ physics.plasm-ph · chao-dyn· nlin.CD

Kinetic limit of N-body description of wave-particle self- consistent interaction

classification ⚛️ physics.plasm-ph chao-dynnlin.CD
keywords datainitialkineticparticlesdistributiondynamicsgeneratedhamiltonian
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A system of N particles eN=(x1,v1,...,xN,vN) interacting self-consistently with M waves Zn=An*exp(iTn) is considered. Hamiltonian dynamics transports initial data (eN(0),Zn(0)) to (eN(t),Zn(t)). In the limit of an infinite number of particles, a Vlasov-like kinetic equation is generated for the distribution function f(x,v,t), coupled to envelope equations for the M waves. Any initial data (f(0),Z(0)) with finite energy is transported to a unique (f(t),Z(t)). Moreover, for any time T>0, given a sequence of initial data with N particles distributed so that the particle distribution fN(0)-->f(O) weakly and with Zn(0)-->Z(O) as N tends to infinity, the states generated by the Hamiltonian dynamics at all time 0<t<T are such that (eN(t),Zn(t)) converges weakly to (f(t),Z(t)). Comments: Kinetic theory, Plasma physics.

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