Results 31 to 40 of about 406 (180)
Feshbach Resonance in Dense Ultracold Fermi Gases [PDF]
Physical Review Letters, 2003 We propose a coherent framework allowing to deal with many-body effects in dense ultracold Fermi gases in the presence of a Feshbach resonance. We show that the simple effect of Pauli exclusion induces a strong modification of the basic scattering properties, leading in particular to an energy dependence of the effective scattering length on the scale ...
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Low-momentum interactions for ultracold Fermi gases [PDF]
Physical Review A, 2021 We consider a two-component Fermi gas with a contact interaction from the BCS regime to the unitary limit. Starting from the idea that many-body effects should not depend on short-distance or high-momentum physics which is encoded in the s-wave scattering length, but only on momentum scales of the order of the Fermi momentum, we build effective low ...
M. Urban, S. Ramanan
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Density correlations in ultracold atomic Fermi gases [PDF]
AIP Conference Proceedings, 2005 We investigate density fluctuations in a coherent ensemble of interacting fermionic atoms. Adapting the concept of full counting statistics, well-known from quantum optics and mesoscopic electron transport, we study second-order as well as higher-order correlators of density fluctuations.
Belzig, W., Schroll, C., Bruder, C.
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Dark soliton collisions in superfluid Fermi gases
New Journal of Physics, 2018 In this work dark soliton collisions in a one-dimensional superfluid Fermi gas are studied across the BEC-BCS crossover by means of a recently developed finite-temperature effective field theory (2015 Eur. Phys. J. B 88 122). The evolution of two counter-
W Van Alphen +3 more
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Induced Interactions for Ultracold Fermi Gases in Optical Lattices [PDF]
Physical Review Letters, 2009 We investigate the effect of optical lattices on the BCS superfluidity by using the Gorkov--Melik-Barkhudarov (GMB) correction for a two-component Fermi gas. We find that the suppression of the order parameter is strongly enhanced by the lattice effects.
Kim, D. H. +2 more
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Toward an Automated-Algebra Framework for High Orders in the Virial Expansion of Quantum Matter
Condensed Matter, 2022 The virial expansion provides a non-perturbative view into the thermodynamics of quantum many-body systems in dilute regimes. While powerful, the expansion is challenging as calculating its coefficients at each order n requires analyzing (if not solving)
Aleks J. Czejdo +3 more
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Strongly Correlated States of Ultracold Rotating Dipolar Fermi Gases [PDF]
Physical Review Letters, 2007 We study strongly correlated ground and excited states of rotating quasi-2D Fermi gases constituted of a small number of dipole-dipole interacting particles with dipole moments polarized perpendicular to the plane of motion. As the number of atoms grows, the system enters {\it an intermediate regime}, where ground states are subject to a competition ...
Osterloh, Klaus +2 more
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Quantum-Zeno Fermi polaron in the strong dissipation limit
Physical Review Research, 2021 The interplay between measurement and quantum correlations in many-body systems can lead to novel types of collective phenomena which are not accessible in isolated systems.
Tomasz Wasak +2 more
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Ultracold Fermi Gases with Resonant Dipole-Dipole Interaction [PDF]
Physical Review Letters, 2013 5 pages, 3 ...
Shi, T. +4 more
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Diatomic molecules in ultracold Fermi gases—novel composite bosons [PDF]
Journal of Physics B: Atomic, Molecular and Optical Physics, 2005 10 pages, 5 ...
Petrov, D.S. +2 more
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