Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Geissler, Andreas"'
Autor:
Geißler, Andreas, Garrahan, Juan P.
We study the unitary dynamics of the bosonic quantum East model, a kinetically constrained lattice model which generalises the quantum East model to arbitrary occupation per site. We consider the semiclassical limit of large (but finite) site occupan
Externí odkaz:
http://arxiv.org/abs/2209.06963
Autor:
Geißler, Andreas
Publikováno v:
Phys. Rev. A 103, 043332 (2021)
The disordered Bose-Hubbard model in two dimensions at non-integer filling admits a superfluid to Bose-glass transition at weak disorder. Less understood are the properties of this system at strong disorder and energy densities corresponding to excit
Externí odkaz:
http://arxiv.org/abs/2011.10104
Autor:
Geißler, Andreas, Pupillo, Guido
Publikováno v:
Phys. Rev. Research 2, 042037 (2020)
We analyze the disorder driven localization of the two dimensional Bose-Hubbard model by evaluating the full low energy quasiparticle spectrum via a recently developed fluctuation operator expansion method. For any strength of the local interaction w
Externí odkaz:
http://arxiv.org/abs/1909.09247
Publikováno v:
Phys. Rev. A 99, 063625 (2019)
Recent experiments with ultracold Rydberg-excited atoms have shown that long-range interactions can give rise to spatially ordered structures. Observation of crystalline phases in a system with Rydberg atoms loaded into an optical lattice seems also
Externí odkaz:
http://arxiv.org/abs/1903.01912
Autor:
Tanunchai, Benjawan, Ji, Li, Schröder, Olaf, Gawol, Susanne Julia, Geissler, Andreas, Wahdan, Sara Fareed Mohamed, Buscot, François, Kalkhof, Stefan, Schulze, Ernst-Detlef, Noll, Matthias, Purahong, Witoon
Publikováno v:
In Science of the Total Environment 15 May 2023 873
Density-wave steady-state phase of dissipative ultracold fermions with nearest-neighbor interactions
Autor:
Panas, Jaromir, Pasek, Michael, Dhar, Arya, Qin, Tao, Geißler, Andreas, Hafez-Torbati, Mohsen, Sorantin, Max E., Titvinidze, Irakli, Hofstetter, Walter
Publikováno v:
Phys. Rev. B 99, 115125 (2019)
In this work we investigate the effect of local dissipation on the presence of density-wave ordering in spinful fermions with both local and nearest-neighbor interactions as described by the extended Hubbard model. We find density-wave order to be ro
Externí odkaz:
http://arxiv.org/abs/1811.07369
Decay-dephasing-induced steady states in bosonic Rydberg-excited quantum gases in an optical lattice
Publikováno v:
Phys. Rev. A 99, 033602 (2019)
We investigate the possibility of realizing supersolid quantum phases in bosonic Rydberg-excited quantum lattice gases in the presence of non-unitary processes, by simulating the dynamical evolution starting from initial preparation in non-dissipativ
Externí odkaz:
http://arxiv.org/abs/1806.08588
Publikováno v:
Phys. Rev. A 98, 063635 (2018)
One of the major challenges in realizing a strongly interacting lattice gas using Rydberg states is the occurrence of avalanche loss processes. As these are directly proportional to the total Rydberg fraction, the commonly suggested solution is using
Externí odkaz:
http://arxiv.org/abs/1806.05911
Publikováno v:
Phys. Rev. A 97, 023619 (2018)
Recent experiments have illustrated that long range two-body interactions can be induced by laser coupling atoms to highly excited Rydberg states. Stimulated by this achievement, we study supersolidity of lattice bosons in an experimentally relevant
Externí odkaz:
http://arxiv.org/abs/1705.01026
Publikováno v:
Coatings (2079-6412); Aug2024, Vol. 14 Issue 8, p1028, 25p