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math.PR2008
Breaking the chain
Michael Allman, Volker Betz
We consider the motion of a Brownian particle in , moving between a particle fixed at the origin and another moving deterministically away at slow speed . The midd…
math-ph2008
Emergence of exponentially small reflected waves
Volker Betz, Alain Joye, Stefan Teufel
We study the time-dependent scattering of a quantum mechanical wave packet at a barrier for energies larger than the barrier height, in the semi-classical regime. More precisely, w…