搜索结果: 1-15 共查到“理学 Fermi gas”相关记录18条 . 查询时间(0.09 秒)
Pseudogap phenomenon in an ultracold Fermi gas with a p-wave pairing interaction
Pseudogap phenomenon in an ultracold Fermi gas with a p-wave pairing interaction
2012/2/27
We investigate single-particle properties of a one-component Fermi gas with a tunable p-wave interaction. Including pairing fluctuations associated with this anisotropic interaction within a $T$-matri...
Fermi gas with attractive potential and arbitrary spin in one-dimensional trap
Fermi gas attractive potential arbitrary spin one-dimensional trap
2011/8/18
Abstract: A gas of ultracold $^6$Li atoms (effective spin 1/2) confined to an elongated trap with one-dimensional properties is a candidate to display three different phases: (i) fermions bound in Coo...
Current response, structure factor and hydrodynamic quantities of a two- and three-dimensional Fermi gas from the operator product expansion
Current response structure factor
2011/7/21
We apply the operator product expansion to determine the asymptotic form of the current response of a Fermi gas in two and three dimensions.
Lattice field theory is a useful tool for studying strongly interacting theories in condensed matter physics. A prominent example is the unitary Fermi gas: a two-component system of fermions interacti...
Lattice field theory is a useful tool for studying strongly interacting theories in condensed matter physics. A prominent example is the unitary Fermi gas: a two-component system of fermions interacti...
Grey solitons in a strongly interacting superfluid Fermi Gas
Grey solitons strongly interacting superfluid Fermi Gas
2010/11/24
The Bardeen-Cooper-Schrieffer to Bose-Einstein condensate (BCS to BEC) crossover problem is
solved for stationary grey solitons via the Boguliubov-de Gennes equations at zero temperature.
These cros...
Polarons and Molecules in a Two-Dimensional Fermi Gas
Polarons Molecules Two-Dimensional Fermi Gas
2010/11/23
We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i)an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity ...
The dynamics of dark solitons in a trapped superfluid Fermi gas
dynamics of dark solitons trapped superfluid Fermi gas
2010/11/24
We study soliton oscillations in a trapped superfluid Fermi gas across the Bose-Einstein conden-sate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover. We derive an exact equation relating the phase ju...
Crossover from 2D to 3D in a weakly interacting Fermi gas
Crossover interacting Fermi gas
2010/11/18
We have studied the transition from two to three dimensions in a low temperature weakly interacting 6Li Fermi gas. Below a critical atom number, N2D, only the lowest transverse vibrational state of a ...
BCS-BEC crossover in a two-dimensional Fermi gas
BCS-BEC crossover two-dimensional Fermi gas
2010/11/23
We investigate the crossover from Bardeen-Cooper-Schrieffer (BCS) superfluidity to Bose-Einstein condensation (BEC) in a two-dimensional Fermi gas at T = 0 using the fixed-node diffusion Monte Carlo m...
Lattice field theory is a useful tool for studying strongly interacting theories in condensed matter physics. A prominent example is the unitary Fermi gas: a two-component system of fermions interacti...
Mixture of Tonks-Girardeau gas and Fermi gas in one-dimensional optical lattices
Mixture of Tonks-Girardeau gas Fermi gas one-dimensional optical lattices
2010/11/25
We study the Bose-Fermi mixture with infinitely boson-boson repulsion and finite boson-Fermion
repulsion. By using a generalized Jordan-Wigner transformation, we show that the system can be
mapped t...
Gradient Catastrophe and Fermi Edge Resonances in Fermi Gas
Gradient Catastrophe Fermi Edge Resonances Fermi Gas
2010/11/19
A smooth spatial disturbance of the Fermi surface in a Fermi gas inevitably becomes sharp. This
phenomenon, called the gradient catastrophe, causes the breakdown of a Fermi sea to disconnected parts ...
Low-temperature thermodynamics of the unitary Fermi gas: superfluid fraction, first sound and second sound
Low-temperature thermodynamics unitary Fermi gas superfluid fraction
2010/11/25
We investigate the low-temperature thermodynamics of the unitary Fermi gas by introducing a
model based on the zero-temperature spectra of both bosonic collective modes and fermonic singleparticle ex...
Low-temperature thermodynamics of the unitary Fermi gas: superfluid fraction, first sound and second sound
Low-temperature thermodynamics of the unitary Fermi gas superfluid fraction first sound second sound
2011/1/10
We investigate the low-temperature thermodynamics of the unitary Fermi gas by introducing a
model based on the zero-temperature spectra of both bosonic collective modes and fermonic singleparticle ex...