Results 1 to 10 of about 406 (180)

Fulde–Ferrell superfluids in spinless ultracold Fermi gases

New Journal of Physics, 2018
The Fulde–Ferrell (FF) superfluid phase, in which fermions form finite momentum Cooper pairings, is well studied in spin-singlet superfluids in past decades. Different from previous works that engineer the FF state in spinful cold atoms, we show that the
Zhen-Fei Zheng, Guang-Can Guo, Zhen Zheng, Xu-Bo Zou   +3 more
doaj   +3 more sources

Stability and sensitivity of interacting fermionic superfluids to quenched disorder [PDF]

Nature Communications
The microscopic pair structure of superfluids has profound consequences on their properties. Delocalized pairs are predicted to be less affected by static disorder than localized pairs.
Jennifer Koch, Sian Barbosa, Felix Lang, Artur Widera   +3 more
doaj   +2 more sources

Vortices and antivortices in two-dimensional ultracold Fermi gases. [PDF]

Sci Rep, 2017
AbstractVortices are commonly observed in the context of classical hydrodynamics: from whirlpools after stirring the coffee in a cup to a violent atmospheric phenomenon such as a tornado, all classical vortices are characterized by an arbitrary circulation value of the local velocity field.
Bighin G, Salasnich L.
europepmc   +6 more sources

Thermal BCS-BEC Crossovers in Finite Systems [PDF]

Entropy
We investigate the thermal evolution of fermionic pairings in a finite-size SU(2) × SU(2) complex model, drawing an analogy to the BCS-BEC crossover in interacting quantum gases.
Angelo Plastino, Flavia Pennini, Victor Apel   +2 more
doaj   +2 more sources

Quantized Nonlinear Transport with Ultracold Atoms [PDF]

Quantum, 2022
In this letter, we propose how to measure the quantized nonlinear transport using two-dimensional ultracold atomic Fermi gases in a harmonic trap. This scheme requires successively applying two optical pulses in the left and lower half-planes and then ...
Fan Yang, Hui Zhai
doaj   +1 more source

Repulsive Fermi and Bose Polarons in Quantum Gases

Atoms, 2022
Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary excitations of a many-particle background. In the field of ultracold atoms, the study of the associated impurity problem has attracted a growing interest over the last ...
Francesco Scazza, Matteo Zaccanti, Pietro Massignan, Meera M. Parish, Jesper Levinsen   +4 more
doaj   +1 more source

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
doaj   +1 more source

Thermodynamics of ultracold Fermi gases [PDF]

Latin America Optics and Photonics Conference, 2010
Les gaz ultrafroids permettent d'étudier sous un angle nouveau des hamiltoniens complexes issus de la matière condensée, tels le modèle de Fermi-Hubbard. Cette thèse présente une nouvelle méthode de mesure de l'équation d'état d'un gaz ultrafroid, autorisant une comparaison directe avec la théorie.
Sylvain Nascimbène, Nir Navon, Frédéric Chevy, Christophe Salomon   +3 more
openaire   +3 more sources

Itinerant ferromagnetism in dilute SU(N) Fermi gases

SciPost Physics, 2023
We present exact analytic results for the energy of a SU(N) repulsive Fermi gas as a function of the spin-channel occupation at second order in the gas parameter.
Jordi Pera, Joaquim Casulleras, Jordi Boronat
doaj   +1 more source

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
doaj   +1 more source