48 citations · 200 across the 7 of their papers we have counts for
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math.DG2007
Eigenvalues Estimates For The Dirac Operator In Terms Of Codazzi Tensors
Th. Friedrich, E. C. Kim
We prove a lower bound for the first eigenvalue of the Dirac operator on a compact Riemannian spin manifold depending on the scalar curvature as well as a chosen Codazzi tensor. Th…
nlin.CD2007★ 37 cited
Spectral properties of Bunimovich mushroom billiards
B. Dietz, T. Friedrich, M. Miski-Oglu +2
Properties of a quantum mushroom billiard in the form of a superconducting microwave resonator have been investigated. They reveal unexpected nonuniversal features such as, e.g., a…
cond-mat.other2007★ 42 cited
Induced Time-Reversal Symmetry Breaking Observed in Microwave Billiards
B. Dietz, T. Friedrich, H. L. Harney +4
Using reciprocity, we investigate the breaking of time-reversal (T) symmetry due to a ferrite embedded in a flat microwave billiard. Transmission spectra of isolated single resonan…