Vlasov equation (for long-range interactions and negligible collisions)

E236563

The Vlasov equation is a kinetic equation that describes the evolution of the distribution function of a many-particle system with long-range interactions in the collisionless (or weakly collisional) regime, widely used in plasma physics and astrophysics.

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Predicate Object
instanceOf collisionless Boltzmann equation
kinetic equation
partial differential equation
appliesTo collisionless plasmas
many-particle systems with long-range interactions
self-gravitating stellar systems
weakly collisional plasmas
assumes large number of particles
mean-field approximation
negligible binary collisions
combinedWith Maxwell equations
linked to: Maxwell's equations

Poisson equation
concerns non-equilibrium statistical mechanics
describes time evolution of a distribution function in phase space
expresses conservation of phase-space density along characteristics
field mathematical physics
theoretical physics
forms Vlasov–Maxwell system
Vlasov–Poisson system
generalizes collisionless limit of the Boltzmann equation
governs single-particle distribution function
hasApproximation drift-kinetic equation
gyrokinetic equation
hasIndependentVariable position
time
velocity
hasSolutionConcept characteristic curves in phase space
introducedBy Anatoly Vlasov
mathematicalForm first-order partial differential equation in phase-space coordinates
first-order partial differential equation in time
namedAfter Anatoly Vlasov
neglects short-range collisional effects
relatedTo BBGKY hierarchy
Boltzmann equation
Liouville equation
typeOf mean-field kinetic theory
usedFor study of Landau damping
study of plasma instabilities
study of violent relaxation in stellar systems
study of wave–particle interactions
usedIn astrophysics
beam physics
galactic dynamics
nuclear fusion research
plasma physics
space physics
validInRegime long-range electromagnetic interactions
long-range gravitational interactions

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Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Boltzmann equation hasLimit Vlasov equation (for long-range interactions and negligible collisions)
Vlasov equation forms Vlasov–Maxwell system
linked to: Vlasov equation (for long-range interactions and negligible collisions)
Vlasov equation forms Vlasov–Poisson system
linked to: Vlasov equation (for long-range interactions and negligible collisions)
Schwarzschild method in galactic dynamics basedOn collisionless Boltzmann equation
linked to: Vlasov equation (for long-range interactions and negligible collisions)