245 citations · 1.8k across the 59 of their papers we have counts for
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Verification of exceptional points in the collapse dynamics of Bose-Einstein condensates
Jonas Brinker, Jacob Fuchs, Jörg Main +2
In Bose-Einstein condensates with an attractive contact interaction the stable ground state and an unstable excited state emerge in a tangent bifurcation at a critical value of the…
Coupling approach for the realization of a -symmetric potential for a Bose-Einstein condensate in a double well
Fabian Single, Holger Cartarius, Günter Wunner +1
We show how non-Hermitian potentials used to describe probability gain and loss in effective theories of open quantum systems can be achieved by a coupling of the system to an envi…
Supersymmetric model of a Bose-Einstein condensate in a -symmetric double-delta trap
Nikolas Abt, Holger Cartarius, Günter Wunner
The most important properties of a Bose-Einstein condensate subject to balanced gain and loss can be modelled by a Gross-Pitaevskii equation with an external -symmetr…
Classical dynamics and localization of resonances in the high energy region of the hydrogen atom in crossed fields
Frank Schweiner, Jörg Main, Holger Cartarius +1
When superimposing the potentials of external fields on the Coulomb potential of the hydrogen atom a saddle point appears, which is called the Stark saddle point. For energies slig…
Quantum master equation with balanced gain and loss
Dennis Dast, Daniel Haag, Holger Cartarius +1
We present a quantum master equation describing a Bose-Einstein condensate with particle loss on one lattice site and particle gain on the other lattice site whose mean-field limit…
Realizing PT-symmetric non-Hermiticity with ultra-cold atoms and Hermitian multi-well potentials
Manuel Kreibich, Jörg Main, Holger Cartarius +1
We discuss the possibility of realizing a non-Hermitian, i.e. an open two-well system of ultra-cold atoms by enclosing it with additional time-dependent wells that serve as particl…