Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ebling, Ulrich"'
Publikováno v:
SciPost Phys. 12, 167 (2022)
We theoretically study spin-$1/2$ fermions confined to two spatial dimensions and experiencing isotropic short-range attraction in the presence of both spin-orbit coupling and Zeeman spin splitting - a prototypical system for developing topological s
Externí odkaz:
http://arxiv.org/abs/2112.09336
Publikováno v:
Phys. Rev. Research 3, 023142 (2021)
We study properties of the lowest energy states at non-zero total momentum (yrast states) of the Hubbard model for spin-1/2 fermions in the quantum ring configuration with attractive on-site interaction at low density. In the one-dimensional (1D) cas
Externí odkaz:
http://arxiv.org/abs/2011.14538
Publikováno v:
Phys. Rev. Research 2, 043270 (2020)
A hyperbolic singularity in the wave-function of $s$-wave interacting atoms is the root problem for any accurate numerical simulation. Here we apply the transcorrelated method, whereby the wave-function singularity is explicitly described by a two-bo
Externí odkaz:
http://arxiv.org/abs/2002.05987
Autor:
Ebling, Ulrich
Publikováno v:
TDX (Tesis Doctorals en Xarxa).
Ultracold atomic gases have established themselves as quantum systems, which are clean and offer a high degree of control over crucial parameters. They are well isolated from their environment and thus offer the possibility to study coherent many-bod
Externí odkaz:
http://hdl.handle.net/10803/284656
Autor:
Ebling, Ulrich, Ueda, Masahito
We show that an analogue to the classical Einstein-de Haas effect can appear in ultracold dipolar Fermi gases. The anisotropic nature of dipole-dipole interactions can lead to a transfer of magnetization into orbital angular momentum. Remarkably, dis
Externí odkaz:
http://arxiv.org/abs/1701.05446
Autor:
Ebling, Ulrich, Eckardt, André
In this work, we study the dynamics of an atomic harmonically trapped large-spin Fermi gas in one dimension (1D). We investigate the interplay of different collision processes. Coherent spin oscillations, driven by spin-changing forward scattering ar
Externí odkaz:
http://arxiv.org/abs/1612.02618
Autor:
Ebling, Ulrich, Krauser, Jasper Simon, Fläschner, Nick, Sengstock, Klaus, Becker, Christoph, Lewenstein, Maciej, Eckardt, André
Publikováno v:
Phys. Rev. X 4, 021011 (2014)
A fundamental question in many-body physics is how closed quantum systems reach equilibrium. We address this question experimentally and theoretically in an ultracold large-spin Fermi gas where we find a complex interplay between internal and motiona
Externí odkaz:
http://arxiv.org/abs/1312.6704
Autor:
Krauser, Jasper Simon, Ebling, Ulrich, Fläschner, Nick, Heinze, Jannes, Sengstock, Klaus, Lewenstein, Maciej, Eckardt, André, Becker, Christoph
Collective behavior in many-body systems is the origin of many fascinating phenomena in nature ranging from swarms of birds and modeling of human behavior to fundamental magnetic properties of solids. We report on the first observation of collective
Externí odkaz:
http://arxiv.org/abs/1307.8392
Autor:
Heinze, Jannes, Krauser, Jasper Simon, Fläschner, Nick, Sengstock, Klaus, Becker, Christoph, Ebling, Ulrich, Eckardt, Andre, Lewenstein, Maciej
Publikováno v:
Phys. Rev. Lett. 110, 250402 (2013)
We report on the detailed study of multi-component spin-waves in an s=3/2 Fermi gas where the high spin leads to novel tensorial degrees of freedom compared to s = 1/2 systems. The excitations of a spin-nematic state are investigated from the linear
Externí odkaz:
http://arxiv.org/abs/1302.4323
Publikováno v:
Phys. Rev. A 84, 063607 (2011)
We investigate theoretically the time evolution of a one-dimensional system of spin-1/2 fermions in a harmonic trap after, initially, a spiral spin configuration far-from equilibrium is created. We predict a spin segregation building up in time alrea
Externí odkaz:
http://arxiv.org/abs/1104.1965