186 citations · 611 across the 11 of their papers we have counts for
11 papers
Avoided level crossings in open quantum systems
Hichem Eleuch, Ingrid Rotter
At high level density, two states avoid usually crossing at the critical value of the parameter by which the system is controlled. The wavefunctions of the two sta…
Dynamical stabilization and time in open quantum systems
Ingrid Rotter
The meaning of time in an open quantum system is considered under the assumption that both, system and environment, are quantum mechanical objects. The Hamilton operator of the sys…
Correlated behavior of conductance and phase rigidity in the transition from the weak-coupling to the strong-coupling regime
E. N. Bulgakov, I. Rotter, A. F. Sadreev
We study the transmission through different small systems as a function of the coupling strength to the two attached leads. The leads are identical with only one propagating mo…
Exceptional points and double poles of the S matrix
I. Rotter
Exceptional points and double poles of the S matrix are both characterized by the coalescence of a pair of eigenvalues. In the first case, the coalescence causes a defect of the Hi…
Conductance of Open Quantum Billiards and Classical Trajectories
R. G. Nazmitdinov, K. N. Pichugin, I. Rotter +1
We analyse the transport phenomena of 2D quantum billiards with convex boundary of different shape. The quantum mechanical analysis is performed by means of the poles of the S-matr…
Dynamics of quantum systems
I. Rotter
A relation between the eigenvalues of an effective Hamilton operator and the poles of the matrix is derived which holds for isolated as well as for overlapping resonance states…