Results 51 to 60 of about 20,873 (170)
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 ...
openaire +3 more sources
Dynamic structure factor of ultracold Bose and Fermi gases in optical lattices [PDF]
, 2004 We investigate the dynamic structure factor of atomic Bose and Fermi gases in one-dimensional optical lattices at zero temperature. The focus is on the generic behaviour of S(k,omega) as function of filling and interaction strength with the aim of ...
Burnett, K., Roth, R.
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Dark solitons impinging on interfaces in a superfluid Fermi gas
Frontiers in Physics, 2022 Ultracold quantum gases in the superfluid regime exhibit solitons, localized excitations that require nonlinearity of the underlying field equation in order to preserve their shape as they propagate.
Jannes Merckx, Jacques Tempere
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Total control over ultracold interactions via electric and magnetic fields [PDF]
, 2007 The scattering length is commonly used to characterize the strength of ultracold atomic interactions, since it is the leading parameter in the low-energy expansion of the scattering phase shift.
Kokkelmans, Servaas +2 more
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Thermometry precision in strongly correlated ultracold lattice gases
New Journal of Physics, 2015 The precise knowledge of the temperature of an ultracold lattice gas simulating a strongly correlated system is a question of both fundamental and technological importance. Here, we address such question by combining tools from quantum metrology together
M Mehboudi +3 more
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Many body population trapping in ultracold dipolar gases
New Journal of Physics, 2014 A system of interacting dipoles is of paramount importance for understanding many-body physics. The interaction between dipoles is anisotropic and long-range . While the former allows one to observe rich effects due to different geometries of the system,
Omjyoti Dutta +2 more
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Second sound with ultracold atoms: a brief review
AAPPS Bulletin, 2022 We briefly review the research on second sound in ultracold atomic physics, with emphasis on strongly interacting unitary Fermi gases with infinitely large s-wave scattering length.
Hui Hu, Xing-Can Yao, Xia-Ji Liu
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Dipolar collisions of polar molecules in the quantum regime
, 2010 Ultracold polar molecules offer the possibility of exploring quantum gases with interparticle interactions that are strong, long-range, and spatially anisotropic.
A Andre +35 more
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Unified model of ultracold molecular collisions
, 2020 A scattering model is developed for ultracold molecular collisions, which allows inelastic processes, chemical reactions, and complex formation to be treated in a unified way.
Bohn, John L. +2 more
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Dynamically probing ultracold lattice gases via Rydberg molecules
New Journal of Physics, 2015 We show that the excitation of long-range Rydberg molecules in a three-dimensional optical lattice can be used as a position- and time-sensitive probe for doubly occupied sites in the system.
T Manthey +3 more
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