Results 21 to 30 of about 681,344 (199)

Topological phase transitions driven by real next-nearest-neighbor hopping in cold fermi gases

open access: yesResults in Physics, 2014
The strength t′ of the next-nearest-neighbor (NNN) hopping in most realized square optical lattices is much smaller than that of the nearest-neighbor hopping, and is usually seen as zero.
R. Wang, Y.F. Zhang, C.X. Zhang
doaj   +1 more source

Implementation of ultrasonic sensing for high resolution measurement of binary gas mixture fractions [PDF]

open access: yes, 2014
We describe an ultrasonic instrument for continuous real-time analysis of the fractional mixture of a binary gas system. The instrument is particularly well suited to measurement of leaks of a high molecular weight gas into a system that is nominally ...
Bates, Richard   +33 more
core   +2 more sources

d-Wave Spin Density Wave phase in the Attractive Hubbard Model with Spin Polarization [PDF]

open access: yes, 2009
We investigate the possibility of unconventional spin density wave (SDW) in the attractive Hubbard model with finite spin polarization. We show that pairing and density fluctuations induce the transverse d-wave SDW near the half-filling.
Aimi T.   +38 more
core   +1 more source

A new type of automatic gas distribution system applied in flameproof test devices

open access: yesGong-kuang zidonghua, 2014
In view of problems of slow speed of gas distribution, big volume of system of traditional gas distribution methods applied in flameproof test devices, an automatic gas distribution system based on mass flow method was designed. The system uses mass flow
JI Xiaohua, WANG Zhiming
doaj   +1 more source

Computer program for high pressure real gas effects [PDF]

open access: yes, 1969
Computer program obtains the real-gas isentropic flow functions and thermodynamic properties of gases for which the equation of state is known. The program uses FORTRAN 4 subroutines which were designed for calculations of nitrogen and helium.
Johnson, R. C.
core   +1 more source

Multi-Phase Gas Dynamics in a Weak Barred Potential [PDF]

open access: yes, 2001
The structure of the interstellar medium in the central kpc region of a galaxy with a weak bar-like potential is investigated taking into account realistic cooling and heating processes and the self-gravity of the gas.
Koda, J., Wada, K.
core   +2 more sources

Acidic Gases Solubility in Bis(2-Ethylhexyl) Sulfosuccinate Based Ionic Liquids Using the Predictive Thermodynamic Model

open access: yesMembranes, 2020
To properly design ionic liquids (ILs) adopted for gases separation uses, a knowledge of ILs thermodynamic properties as well their solubilities with the gases is essential.
Amal Mechergui   +5 more
doaj   +1 more source

On weak shock diffraction in real gases [PDF]

open access: yes, 2014
Asymptotic solutions are obtained for the two-dimensional Euler system for real gases with appropriate boundary conditions which describe the diffraction of a weak shock at a right-angled wedge; the real gas effects are characterized by a van der Waals ...
Gupta, Neelam, Sharma, V. D.
core  

Low-frequency internal friction (LFIF) as express-method for identification of cryocrystals in pores of the solids

open access: yes, 2016
We show that studying of low-frequency internal friction (LFIF) of solid samples at low temperatures allows determining the presence of various gases absorbed, for some reasons, in pores and caverns of the solids.
Erenburg, A. I.   +3 more
core   +1 more source

Spin-charge separation in cold Fermi-gases: a real time analysis

open access: yes, 2005
Using the adaptive time-dependent density-matrix renormalization group method for the 1D Hubbard model, the splitting of local perturbations into separate wave packets carrying charge and spin is observed in real-time.
C. Kollath   +3 more
core   +1 more source

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