搜索结果: 1-15 共查到“物理学 Crossover”相关记录19条 . 查询时间(0.096 秒)
Critical Temperature Curve in BEC-BCS Crossover
Strong relevant regime condensation two-component system fermion monte carlo method function
2014/12/19
The strongly correlated regime of the crossover from Bardeen-Cooper-Schrieffer pairing to Bose-Einstein condensation can be realized by diluting a system of two-component fermions with a short-range a...
BCS-BEC crossover in spatially modulated fermionic condensates
BCS-BEC spatially modulated fermionic condensates
2011/7/20
Several novel multi-component fermionic condensates show universal behavior under imbalance in the number of fermionic species.
Crossover from negative to positive shear rate dependence in granular friction
Crossove granular friction
2011/9/9
We conduct an experiment on the frictional properties of granular matter over a wide range of shear rate that covers both the quasistatic and the inertial regimes. We show that the friction coefficien...
The Sphaleron Rate at the Electroweak Crossover
The Sphaleron Rate the Electroweak Crossover
2011/1/6
The baryon number is violated in the Standard Model by non-perturbative sphaleron transitions. At temperatures above the electroweak scale, the rate of the sphaleron transitions is unsuppressed and ha...
The Sphaleron Rate at the Electroweak Crossover
The Sphaleron Rate the Electroweak Crossover
2011/1/6
The baryon number is violated in the Standard Model by non-perturbative sphaleron transitions. At temperatures above the electroweak scale, the rate of the sphaleron transitions is unsuppressed and ha...
Mapping out the quasi-condensate transition through the 1D-3D dimensional crossover
quasi-condensate transition 1D-3D dimensional crossover
2010/11/23
By measuring the density fluctuations in a highly elongated weakly interacting Bose gas, we observe and quantify the transition from the ideal gas to a quasi-condensate regime throughout the dimension...
The Kondo crossover in shot noise of a single quantum dot with orbital degeneracy
Kondo crossover orbital degeneracy
2010/11/19
We investigate out of equilibrium transport through an orbital Kondo system realized in a single quantum dot, described by the multiorbital impurity Anderson model. Shot noise and current are calculat...
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 ...
Population imbalance and pairing in the BCS-BEC crossover of three-component ultracold fermions
Population imbalance three-component ultracold fermions
2010/11/17
We investigate the phase diagram and the BCS-BEC crossover of a homogeneous three-component
ultracold Fermi gas with a U(3) invariant attractive interaction. We show that the system at
sufficiently ...
We explore the properties of the low-temperature phase of the O(n) loop model in two dimensions
by means of transfer-matrix calculations and finite-size scaling. We determine the stability of this ph...
The baryon number is violated in the Standard Model by non-perturbative sphaleron transitions.
At temperatures above the electroweak scale, the rate of the sphaleron transitions is unsuppressed and h...
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...
Percolation-to-hopping crossover in conductor-insulator composites
Percolation-to-hopping crossover conductor-insulator composites
2010/11/17
Here, we show that the conductivity of conductor-insulator composites in which electrons can
tunnel from each conducting particle to all others may display both percolation and tunneling (i.e.,hoppin...
Crossover from commensurate to incommensurate antiferromagnetism in stoichiometric NaFeAs revealed by single-crystal 23Na,75As-NMR experiments
NaFeAs NMR incommensurate antiferromagnetism 111-type iron arsenide
2010/11/18
We report results of 23Na and 75As nuclear magnetic resonance (NMR) experiments on a
self-flux grown high-quality single crystal of stoichiometric NaFeAs. The NMR spectra revealed
a tetragonal to tw...
Dimensional crossover in topological matter: Evolution of the multiple Dirac point in the layered system to the flat band on the surface
Dimensional crossover topological matter multiple Dirac point
2010/11/24
We consider the dimensional crossover in the topological matter, which involves the ransformation of different types of topologically protected zeroes in the fermionic spectrum. In the considered case...