Results 121 to 130 of about 8,731 (217)

Quenching a Fermi superfluid across the BEC-BCS crossover

open access: yesSciPost Physics
We study the response of a Fermi superfluid to a rapid change of the interaction strength. For a broad range of quench parameters, the order parameter exhibits damped oscillations, however, we also identify quench regimes in which these oscillations are ...
Moritz Breyer, Daniel Eberz, Andreas Kell, Michael Köhl
doaj   +1 more source

UEG Week 2015 Poster Presentations

open access: yes, 2015
United European Gastroenterology Journal, Volume 3, Issue S5, Page 146-687, October 2015.
wiley   +1 more source

Relativistic description of BCS–BEC crossover in nuclear matter

open access: yesPhysics Letters B, 2010
We study theoretically the di-neutron spatial correlations and the crossover from superfluidity of neutron Cooper pairs in the $^1S_0$ pairing channel to Bose-Einstein condensation (BEC) of di-neutron pairs for both symmetric and neutron matter in the microscopic relativistic pairing theory.
Sun B.Y., Toki H., Meng J.
openaire   +3 more sources

Peaks and widths of radio-frequency spectra: An analysis of the phase diagram of ultra-cold Fermi gases

open access: yesResults in Physics
We provide a comprehensive theoretical study of the radio-frequency (rf) spectra of a two-component Fermi gas with balanced populations in the normal region of the temperature-vs-coupling phase diagram.
Leonardo Pisani   +3 more
doaj   +1 more source

Collective oscillation modes of a superfluid Bose–Fermi mixture

open access: yesNew Journal of Physics, 2019
In this work, we present a theoretical study for the collective oscillation modes, i.e. quadrupole, radial and axial mode, of a mixture of Bose and Fermi superfluids in the crossover from a Bardeen-Cooper-Schrieffer (BCS) superfluid to a molecular Bose ...
Wen Wen, Ying Wang, Jianyong Wang
doaj   +1 more source

UEG Week 2013 Poster Presentations

open access: yes, 2013
United European Gastroenterology Journal, Volume 1, Issue S1, Page A135-A587, October 2013.
wiley   +1 more source

BCS BEC crossover and phase structure of relativistic system: a variational approach

open access: yes, 2009
We investigate here the BCS BEC crossover in relativistic systems using a variational construct for the ground state and the minimization of the thermodynamic potential.
Amruta Mishra   +6 more
core   +1 more source

Superfluid stability in BEC-BCS crossover

open access: yes, 2005
We consider a dilute atomic gas of two species of fermions with unequal concentrations under a Feshbach resonance. We find that the system can have distinct properties due to the unbound fermions. The uniform state is stable only when either (a) beyond a
A. I. Larkin   +6 more
core   +1 more source

Leggett collective excitations in a two-band Fermi superfluid at finite temperatures

open access: yesNew Journal of Physics, 2019
The Leggett collective excitations for a two-band Fermi gas with s -wave pairing and Josephson interband coupling in the BCS-BEC crossover at finite temperatures are investigated within the Gaussian pair fluctuation approach. Eigenfrequencies and damping
S N Klimin, H Kurkjian, J Tempere
doaj   +1 more source

Home - About - Disclaimer - Privacy