Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Chris J Vale"'
Publikováno v:
New Journal of Physics, Vol 16, Iss 8, p 083023 (2014)
We theoretically investigate first and second sound modes of a unitary Fermi gas trapped in a highly oblate harmonic trap at finite temperatures. Following the idea by Stringari and co-workers (2010 Phys. Rev. Lett. http://dx.doi.org/10.1103/PhysRevL
Externí odkaz:
https://doaj.org/article/5f5a05e6c50b4d48b19a6ffc0c8c03b7
Autor:
Chris J. Vale
Publikováno v:
Quantum Computing, Communication, and Simulation III.
Autor:
Chris J. Vale, Martin Zwierlein
Publikováno v:
Nature Physics. 17:1305-1315
Publikováno v:
Physical review letters. 127(10)
We present an experimental study of a two component Fermi gas following an interaction quench into the superfluid phase. Starting with a weakly attractive gas in the normal phase, interactions are ramped to unitarity at a range of rates and we measur
Autor:
Georg M. Bruun, Ivan Herrera, Jami J. Kinnunen, Sascha Hoinka, Carlos C. N. Kuhn, Paul Dyke, Chris J. Vale
Publikováno v:
Kuhn, C C N, Hoinka, S, Herrera, I, Dyke, P, Kinnunen, J J, Bruun, G M & Vale, C J 2020, ' High-Frequency Sound in a Unitary Fermi Gas ', Physical Review Letters, vol. 124, no. 15, 150401 . https://doi.org/10.1103/PhysRevLett.124.150401
We present an experimental and theoretical study of the phonon mode in a unitary Fermi gas. Using two-photon Bragg spectroscopy, we measure excitation spectra at a momentum of approximately half the Fermi momentum, both above and below the superfluid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b23d3354cde9fe9fcc4d2048d97c9b42
https://pure.au.dk/portal/da/publications/highfrequency-sound-in-a-unitary-fermi-gas(7cd1674d-a9b7-4ae8-a510-157240673ae7).html
https://pure.au.dk/portal/da/publications/highfrequency-sound-in-a-unitary-fermi-gas(7cd1674d-a9b7-4ae8-a510-157240673ae7).html
Autor:
Paul Dyke, Marcus Lingham, Sascha Hoinka, Chris J. Vale, Peter Hannaford, T. Peppler, Kristian Fenech
Publikováno v:
Journal of Modern Optics. 63:1783-1794
This article provides an overview of recent developments and emerging topics in the study of two-component Fermi gases using Bragg spectroscopy. Bragg scattering is achieved by exposing a gas to two intersecting laser beams with a slight frequency di
Publikováno v:
Physical Review Letters. 121
We present an experimental investigation of collective oscillations in harmonically trapped Fermi gases through the crossover from two to three dimensions. Specifically, we measure the frequency of the radial monopole or breathing mode as a function
Publikováno v:
Physical Review A. 96
We theoretically investigate superfluidity in a strongly interacting Fermi gas confined to two dimensions at finite temperature. Using a Gaussian pair fluctuation theory in the superfluid phase, we calculate the superfluid density and determine the c
Publikováno v:
Physical Review A. 96
We theoretically explore the crossover from three dimensions (3D) to two (2D) in a strongly interacting atomic Fermi superfluid through confining the transverse spatial dimension. Using the gaussian pair fluctuation theory, we determine the zero-temp
Publikováno v:
Hoinka, S, Dyke, P, Lingham, M, Kinnunen, J, Bruun, G & Vale, C 2017, ' Goldstone mode and pair-breaking excitations in atomic Fermi superfluids ', Nature Physics . https://doi.org/10.1038/nphys4187
Spontaneous symmetry breaking is a central paradigm of elementary particle physics, magnetism, superfluidity and superconductivity. According to Goldstone's theorem, phase transitions that break continuous symmetries lead to the existence of gapless
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f596aca2d4f01a4678dbc8bcdacad5cd
http://arxiv.org/abs/1707.00406
http://arxiv.org/abs/1707.00406