131 citations · 1.5k across the 69 of their papers we have counts for
6 papers · 2 filters
Realization of balanced gain and loss in a time-dependent four-mode Bose-Hubbard model
Daniel Dizdarevic, Jörg Main, Kirill Alpin +4
A quantum system exhibiting symmetry is a Bose-Einstein condensate in a double-well potential with balanced particle gain and loss, which is described in the mean-fi…
PT-symmetric gain and loss in a rotating Bose-Einstein condensate
Daniel Haag, Dennis Dast, Holger Cartarius +1
PT-symmetric quantum mechanics allows finding stationary states in mean-field systems with balanced gain and loss of particles. In this work we apply this method to rotating Bose-E…
Balanced gain and loss in Bose-Einstein condensates without PT symmetry
Philipp Lunt, Daniel Haag, Dennis Dast +2
Balanced gain and loss renders the mean-field description of Bose-Einstein condensates PT symmetric. However, any experimental realization has to deal with unbalancing in the gain…
Stationary states in the many-particle description of Bose-Einstein condensates with balanced gain and loss
Dennis Dast, Daniel Haag, Holger Cartarius +2
Bose-Einstein condensates with balanced gain and loss can support stationary states despite the exchange of particles with the environment. In the mean-field approximation this is…
Vortices in Bose-Einstein condensates with -symmetric gain and loss
Lukas Schwarz, Holger Cartarius, Ziad H. Musslimani +2
We investigate vortex excitations in dilute Bose-Einstein condensates in the presence of complex -symmetric potentials. These complex potentials are used to describe…
Relation between -symmetry breaking and topologically nontrivial phases in the SSH and Kitaev models
Marcel Klett, Holger Cartarius, Dennis Dast +2
Non-Hermitian systems with symmetry can possess purely real eigenvalue spectra. In this work two one-dimensional systems with two different topological phases, the t…