Results 21 to 30 of about 1,432 (50)

How to Extract Entanglement from a Piece of Solid or a Bunch of Neutrons [PDF]

open access: yes, 2006
We review how to obtain spin entangled pairs of fermions from a Fermi gas. An experiment with neutrons is proposed in order to get such pairs.Comment: Prepared for the Proceedings of Central European Workshop on Quantum Optics, Vienna ...
Cunha, Marcelo O Terra, Vedral, Vlatko
core   +2 more sources

Sound propagation in elongated superfluid fermion clouds [PDF]

open access: yes, 2005
We use hydrodynamic equations to study sound propagation in a superfluid Fermi gas inside a strongly elongated cigar-shaped trap, with main attention to the transition from the BCS to the unitary regime.
Capuzzi, P.   +3 more
core   +2 more sources

Fermi-Dirac statistics and the number theory

open access: yes, 2005
We relate the Fermi-Dirac statistics of an ideal Fermi gas in a harmonic trap to partitions of given integers into distinct parts, studied in number theory.
Abramowitz M.   +14 more
core   +1 more source

Probing the FFLO phase by double occupancy modulation spectroscopy

open access: yes, 2010
We propose here that for a spin-imbalanced two-component attractive Fermi gas loaded in a 1D optical lattice in presence of an harmonic confining potential, the observation of the change in the double occupancy after a lattice depth modulation can ...
A. Larkin   +3 more
core   +1 more source

Topological phase transitions in ultra-cold Fermi superfluids: the evolution from BCS to BEC under artificial spin-orbit fields

open access: yes, 2011
We discuss topological phase transitions in ultra-cold Fermi superfluids induced by interactions and artificial spin orbit fields. We construct the phase diagram for population imbalanced systems at zero and finite temperatures, and analyze spectroscopic
C. A. R. Sá de Melo   +7 more
core   +1 more source

Two-dimensional quasi-ideal Fermi gas with Rashba spin-orbit coupling

open access: yes, 2013
We investigate the zero-temperature properties of a quasi-ideal Fermi gas with Rashba spin-orbit coupling. We find that the spin-orbit term strongly affects the speeds of zero sound and first sound in the Fermi gas, due to the presence of a third-order ...
Salasnich, Luca
core   +1 more source

Deformation of a Trapped Fermi Gas with Unequal Spin Populations

open access: yes, 2006
The real-space densities of a polarized strongly-interacting two-component Fermi gas of $^6$Li atoms reveal two low temperature regimes, both with a fully-paired core. At the lowest temperatures, the unpolarized core deforms with increasing polarization.
Haque, M.   +5 more
core   +1 more source

Melting of Discrete Vortices via Quantum Fluctuations

open access: yes, 2006
We consider nonlinear boson states with a nontrivial phase structure in the three-site Bose-Hubbard ring, {\em quantum discrete vortices} (or {\em q-vortices}), and study their "melting" under the action of quantum fluctuations.
C. Schmidt-Hattenberger   +5 more
core   +1 more source

Magnetic Phase Transitions in One-dimensional Strongly Attractive Three-Component Ultracold Fermions

open access: yes, 2008
We investigate the nature of trions, pairing and quantum phase transitions in one-dimensional strongly attractive three-component ultracold fermions in external fields.
C. Lee   +4 more
core   +1 more source

An exactly solvable model of the BCS-BEC crossover

open access: yes, 2004
We discuss an integrable model of interacting Fermions in one dimension, that allows an exact description of the crossover from a BCS- to a Bose-like superfluid. This model bridges the Gaudin-Yang model of attractive spin 1/2 Fermions to the Lieb-Liniger
A. Recati   +11 more
core   +1 more source

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