140 citations · 1.1k across the 59 of their papers we have counts for
Showing 2012 · math-phShow all
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math-ph2012★ 1 cited
Non-adiabatic transitions in a massless scalar field
Johannes von Keler, Stefan Teufel
We consider the dynamics of a massless scalar field with time-dependent sources in the adiabatic limit. This is an example of an adiabatic problem without spectral gap. The main go…
math-ph2012★ 29 cited
Orbital polarization and magnetization for independent particles in disordered media
Hermann Schulz-Baldes, Stefan Teufel
Formulas for the contribution of the conduction electrons to the polarization and magnetization are derived for disordered systems and within a one-particle framework. These result…
math-ph2012★ 32 cited
Semiclassical approximations for Hamiltonians with operator-valued symbols
Hans-Michael Stiepan, Stefan Teufel
We consider the semiclassical limit of quantum systems with a Hamiltonian given by the Weyl quantization of an operator valued symbol. Systems composed of slow and fast degrees of…