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- Max Planck SocietyDE46 papers
- University of GöttingenDE25 papers
- Wesleyan UniversityUS14 papers
- Cornell UniversityUS12 papers
- Bernstein Center for Computational Neuroscience GöttingenDE10 papers
- University of the AegeanGR10 papers
- Center for NanoScienceDE5 papers
- Harvard UniversityUS5 papers
- Ludwig-Maximilians-Universität MünchenDE5 papers
- Ben-Gurion University of the NegevIL4 papers
- Centre National de la Recherche ScientifiqueFR4 papers
- University of CopenhagenDK4 papers
7 papers · 1 filter
Exponentially Fragile PT-Symmetry in Lattices with Localized Eigenmodes
Oliver Bendix, Ragnar Fleischmann, Tsampikos Kottos +1
We study the effect of localized modes in lattices of size N with parity-time (PT) symmetry. Such modes are arranged in pairs of quasi-degenerate levels with splitting delta exp{-N…
Wavepacket dynamics in energy space of a chaotic trimeric Bose-Hubbard system
Moritz Hiller, Tsampikos Kottos, Theo Geisel
We study the energy redistribution of interacting bosons in a ring-shaped quantum trimer as the coupling strength between neighboring sites of the corresponding Bose-Hubbard Hamilt…
Occupation Statistics of a BEC for a Driven Landau-Zener Crossing
Katrina Smith-Mannschott, Maya Chuchem, Moritz Hiller +2
We consider an atomic Bose-Einstein condensate (BEC) loaded in a biased double-well trap with tunneling rate and inter-atomic interaction . The BEC is prepared such that all…
Controlled quantum stirring of Bose-Einstein condensates
Moritz Hiller, Tsampikos Kottos, Doron Cohen
By cyclic adiabatic change of two control parameters of an optical trap one can induce a circulating current of condensed bosons. The amount of particles that are transported per p…
Engineering fidelity echoes in Bose-Hubbard Hamiltonians
J. D. Bodyfelt, M. Hiller, T. Kottos
We analyze the fidelity decay for a system of interacting bosons described by a Bose-Hubbard Hamiltonian. We find echoes associated with "non-universal" structures that dominate th…
Complexity in parametric Bose-Hubbard Hamiltonians and structural analysis of eigenstates
Moritz Hiller, Tsampikos Kottos, T. Geisel
We consider a family of chaotic Bose-Hubbard Hamiltonians (BHH) parameterized by the coupling strength between neighboring sites. As increases the eigenstates undergo chang…