23 citations · 51 across the 8 of their papers we have counts for
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math.DS2016★ 23 cited
A Geometric Heat-Flow Theory of Lagrangian Coherent Structures
Daniel Karrasch, Johannes Keller
We consider Lagrangian coherent structures (LCSs) as the boundaries of material subsets whose advective evolution is metastable under weak diffusion. For their detection, we first…
math-ph2016★ 6 cited
The spectrogram expansion of Wigner functions
Johannes Keller
Wigner functions generically attain negative values and hence are not probability densities. We prove an asymptotic expansion of Wigner functions in terms of Hermite spectrograms,…
quant-ph2016
Quantum expectations via spectrograms
Johannes Keller, Caroline Lasser, Tomoki Ohsawa
We discuss a new phase space method for the computation of quantum expectation values in the high frequency regime. Instead of representing a wavefunction by its Wigner function, w…