4 citations · 4 across the 1 of their papers we have counts for
6 papers
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…
Short-Time Loschmidt Gap in Dynamical Systems with Critical Chaos
Carl T. West, Tomaz Prosen, Tsampikos Kottos
We study the Loschmidt echo F(t) for a class of dynamical systems showing critical chaos. Using a kicked rotor with singular potential as a prototype model, we found that the class…
Scaling properties of delay times in one-dimensional random media
Joshua D. Bodyfelt, J. A. Mendez-Bermudez, Andrey Chabanov +1
The scaling properties of the inverse moments of Wigner delay times are investigated in finite one-dimensional (1D) random media with one channel attached to the boundary of the sa…
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…