17 citations · 17 across the 1 of their papers we have counts for
5 papers
Emerging spectra of singular correlation matrices under small power-map deformations
Vinayak, Rudi Schäfer, Thomas H. Seligman
Correlation matrices are a standard tool in the analysis of the time evolution of complex systems in general and financial markets in particular. Yet most analysis assume stationar…
Transition from Gaussian-orthogonal to Gaussian-unitary ensemble in a microwave billiard with threefold symmetry
R. Schaefer, M. Barth, F. Leyvraz +3
Recently it has been shown that time-reversal invariant systems with discrete symmetries may display in certain irreducible subspaces spectral statistics corresponding to the Gauss…
The two-fluid model with superfluid entropy
R. Schaefer, T. Fliessbach
The two-fluid model of liquid helium is generalized to the case that the superfluid fraction has a small entropy content. We present theoretical arguments in favour of such a small…
A new sound mode in liquid Helium 4?
R. Schaefer, T. Fliessbach
This letter is based on the hypothesis of a small entropy content of the superfluid fraction of liquid helium. We show that such a superfluid entropy gives rise to a new sound mode…
On the Numerical Solution of the Time-Dependent Schroedinger Equation
R. Schaefer, R. Blendowske
An algorithm for the numerical solution of the Schrödinger equation in the case of a time dependent potential is proposed. Our simple modification upgrades the well known method of…