arXiv:1206.6348v1 [nlin.CD] 27 Jun 2012 Page 1 arXiv:1206.6348v1 [nlin.CD] 27 Jun 2012
Loschmidt Echo Arseni Goussev1, Rodolfo A. Jalabert2, Horacio M. Pastawski3, and Diego …

The fidelity decay in a microwave billiard is considered, where the coupling to an attached
antenna is varied. The resulting quantity, coupling fidelity, is experimentally studied for three …

Random matrix theory is used to represent generic loss of coherence of a fixed central
system coupled to a quantum-chaotic environment, represented by a random matrix …

By considering correlations between classical orbits we derive semiclassical expressions for
the decay of the quantum fidelity amplitude for classically chaotic quantum systems, as well …

The fidelity, defined as overlap of eigenstates of two slightly different Hamiltonians, is
proposed as an efficient detector of avoided crossings in the energy spectrum. This new …

For a prepared state exact expressions for the time-dependent mean fidelity as well as for
the mean inverse participation ratio are obtained analytically. The prepared state is taken as …

The parameter-dependent correlation function cδ (ω, x) of level velocities is studied
experimentally and numerically. The measurements were made for microwave networks …

Mean fidelity amplitude and parametric energy-energy correlations are calculated exactly for
a regular system, which is subject to a chaotic random perturbation. It turns out that in this …

The autocorrelation function c (x) of level velocities is studied experimentally. The
measurements were performed for microwave networks simulating quantum graphs. One …

Based on an exact analytical approach to describe scattering fidelity experiments [Köber,
Phys. Rev. E 82, 036207 (2010) PLEEE8 1539-3755 10.1103/PhysRevE. 82.036207], we …