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- Max Planck SocietyDE799 papers
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4 papers · 2 filters
Interfering resonances in a quantum billiard
E. Persson, K. Pichugin, I. Rotter +1
We present a method for numerically obtaining the positions, widths and wavefunctions of resonance states in a two dimensional billiard connected to a waveguide. For a rectangular…
Collectivity, Phase Transitions and Exceptional Points in Open Quantum Systems
W. D. Heiss, M. Mueller, I. Rotter
Phase transitions in open quantum systems, which are associated with the formation of collective states of a large width and of trapped states with rather small widths, are related…
Phase transitions in open quantum systems
C. Jung, M. Mueller, I. Rotter
We consider the behaviour of open quantum systems in dependence on the coupling to one decay channel by introducing the coupling parameter being proportional to the average deg…
Coherent and incoherent chaotic tunneling near singlet-doublet crossings
Sigmund Kohler, Ralf Utermann, Peter Hanggi +1
In the spectrum of systems showing chaos-assisted tunneling, three-state crossings are formed when a chaotic singlet intersects a tunnel doublet. We study the dissipative quantum d…