76 citations · 209 across the 7 of their papers we have counts for
7 papers
Tilted optical lattices with defects as realizations of PT symmetry in Bose-Einstein condensates
Manuel Kreibich, Jörg Main, Holger Cartarius +1
A PT-symmetric Bose-Einstein condensate can theoretically be described using a complex optical potential, however, the experimental realization of such an optical potential describ…
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…
Transition states and thermal collapse of dipolar Bose-Einstein condensates
Andrej Junginger, Manuel Kreibich, Jörg Main +1
We investigate thermally excited, dipolar Bose-Einstein condensates. Quasi-particle excitations of the atomic cloud cause density fluctuations which can induce the collapse of the…
Hermitian four-well potential as a realization of a PT-symmetric system
Manuel Kreibich, Jörg Main, Holger Cartarius +1
A PT-symmetric Bose-Einstein condensate can be theoretically described using a complex optical potential, however, the experimental realization of such an optical potential describ…
A variational approach to Bogoliubov excitations and dynamics of dipolar Bose-Einstein condensates
Manuel Kreibich, Jörg Main, Günter Wunner
We investigate the stability properties and the dynamics of Bose-Einstein condensates with axial symmetry, especially with dipolar long-range interaction, using both simulations on…
A nonlinear dynamics approach to Bogoliubov excitations of Bose-Einstein condensates
M. Kreibich, H. Cartarius, J. Main +1
We assume the macroscopic wave function of a Bose-Einstein condensate as a superposition of Gaussian wave packets, with time-dependent complex width parameters, insert it into the…
Relation between the eigenfrequencies of Bogoliubov excitations of Bose-Einstein condensates and the eigenvalues of the Jacobian in a time-dependent variational approach
Manuel Kreibich, Jörg Main, Günter Wunner
We study the relation between the eigenfrequencies of the Bogoliubov excitations of Bose-Einstein condensates, and the eigenvalues of the Jacobian stability matrix in a variational…