Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:0904.4334 · Physics Letters A

A strongly attractive Fermi gas in an optical lattice

Oleksandr Fialko, A. Gammal, K. Ziegler

Published Jul 22, 2010• 2 citations
arXivHTMLPDF
DOI
10.1016/j.physleta.2010.07.038

Related papers

Interband physics in an ultracold Fermi gas in an optical lattice

J.-P. Martikainen, Emil Lundh, Tomi Paananen

We study a gas of strongly polarized cold fermions in an optical lattice when the excited $p$ bands are populated. We derive the relevant Hamiltonian and discuss the expected phase diagram for both repulsive and attractive interactions. In the parameter regime covered here, checkerboard antiferromagnetic ordering is found to be possible for repulsive interactions, while for attractive interactions, transitions between different types of paired phases are predicted.

arXiv:0804.3280•Physical Review A•Aug 5, 2008•6 citations

Strongly interacting Fermi gases in an optical lattice

Niels Strohmaier, Robert Jördens, Kenneth Günter +4 more

Bulletin of the American Physical Society•Mar 12, 2008•0 citations

A degenerate gas of Fermi atoms in a 1D optical lattice

Andrey V. Turlapov, Kirill Martiyanov, Vasiliy Makhalov

Bulletin of the American Physical Society•May 28, 2010•0 citations

Interaction-Controlled Transport of an Ultracold Fermi Gas

Niels Strohmaier, Yosuke Takasu, Kenneth Günter +4 more

We explore the transport properties of an interacting Fermi gas in a three-dimensional optical lattice. The center of mass dynamics of the atoms after a sudden displacement of the trap minimum is monitored for different interaction strengths and lattice fillings. With increasingly strong attractive interactions the weakly damped oscillation, observed for the noninteracting case, turns into a slow relaxational drift. Tuning the interaction strength during the evolution allows us to dynamically control the transport behavior. Strong attraction between the atoms leads to the formation of local pairs with a reduced tunneling rate. The interpretation in terms of pair formation is supported by a measurement of the number of doubly occupied lattice sites. This quantity also allows us to determine the temperature of the noninteracting gas in the lattice to be as low as (27+/-2)% of the Fermi temperature.

arXiv:0707.3140•Physical Review Letters•Nov 28, 2007•127 citations

Radio-Frequency Spectroscopy of a Strongly Interacting Two-Dimensional Fermi Gas

Bernd Fröhlich, Michael Feld, Enrico Vogt +3 more

We realize and study a strongly interacting two-component atomic Fermi gas confined to two dimensions in an optical lattice. Using radio-frequency spectroscopy we measure the interaction energy of the strongly interacting gas. We observe the confinement-induced Feshbach resonance on the attractive side of the 3D Feshbach resonance and find the existence of confinement-induced molecules in very good agreement with theoretical predictions.

arXiv:1012.0049•Physical Review Letters•Mar 8, 2011•231 citations

Repulsively and Attractively Interacting Fermi-Mixtures in Optical Lattices

Lucia Hackermüller

Bulletin of the American Physical Society•May 20, 2009•0 citations
We study a gas of strongly polarized cold fermions in an optical lattice when the excited ppp bands are populated. We derive the relevant Hamiltonian and discuss the expected phase diagram for both repulsive and attractive interactions. In the parameter regime covered here, checkerboard antiferromagnetic ordering is found to be possible for repulsive interactions, while for attractive interactions, transitions between different types of paired phases are predicted.
We explore the transport properties of an interacting Fermi gas in a three-dimensional optical lattice. The center of mass dynamics of the atoms after a sudden displacement of the trap minimum is monitored for different interaction strengths and lattice fillings. With increasingly strong attractive interactions the weakly damped oscillation, observed for the noninteracting case, turns into a slow relaxational drift. Tuning the interaction strength during the evolution allows us to dynamically control the transport behavior. Strong attraction between the atoms leads to the formation of local pairs with a reduced tunneling rate. The interpretation in terms of pair formation is supported by a measurement of the number of doubly occupied lattice sites. This quantity also allows us to determine the temperature of the noninteracting gas in the lattice to be as low as (27+/-2)% of the Fermi temperature.