6533b829fe1ef96bd128a296

RESEARCH PRODUCT

Tunnel effect and symmetries for Kramers–Fokker–Planck type operators

Frédéric HérauJohannes SjöstrandMichael Hitrik

subject

Maxima and minimaComputer Science::Information RetrievalGeneral MathematicsExponentSemiclassical physicsFokker–Planck equationLimit (mathematics)Finite setEigenvalues and eigenvectorsMathematicsMorse theoryMathematical physics

description

AbstractWe study operators of Kramers–Fokker–Planck type in the semiclassical limit, assuming that the exponent of the associated Maxwellian is a Morse function with a finite number n0 of local minima. Under suitable additional assumptions, we show that the first n0 eigenvalues are real and exponentially small, and establish the complete semiclassical asymptotics for these eigenvalues.

https://doi.org/10.1017/s1474748011000028