scholarly journals The Reduced Effective Interaction Parameter in Closely Spaced Two-dimensional Hole Systems

2010 ◽  
Author(s):  
L. H. Ho ◽  
A. P. Micolich ◽  
W. R. Clarke ◽  
O. Klochan ◽  
A. R. Hamilton ◽  
...  
Keyword(s):  
Interaction Parameter ◽  
Effective Interaction ◽  
Two Dimensional

scholarly journals Zero-Temperature Equation of State of a Two-Dimensional Bosonic Quantum Fluid with Finite-Range Interaction

2019 ◽  
Vol 4 (1) ◽  
pp. 20 ◽  
Author(s):  
Andrea Tononi
Keyword(s):  
Equation Of State ◽  
Effective Interaction ◽  
Equations Of Motion ◽  
Functional Integration ◽  
Dimensional Regularization ◽  
Two Dimensional ◽  
Finite Range ◽  
Zero Temperature ◽  
Range Interaction ◽  
Dimensional Equation

We derive the two-dimensional equation of state for a bosonic system of ultracold atoms interacting with a finite-range effective interaction. Within a functional integration approach, we employ a hydrodynamic parameterization of the bosonic field to calculate the superfluid equations of motion and the zero-temperature pressure. The ultraviolet divergences, naturally arising from the finite-range interaction, are regularized with an improved dimensional regularization technique.

Direct numerical simulation of forced MHD turbulence at low magnetic Reynolds number

1998 ◽  
Vol 358 ◽  
pp. 299-333 ◽  
Author(s):  
OLEG ZIKANOV ◽  
ANDRE THESS
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Boundary Conditions ◽  
Interaction Parameter ◽  
Three Dimensional ◽  
Magnetic Interaction ◽  
Two Dimensional ◽  
Mhd Turbulence ◽  
Magnetic Interaction Parameter

The transformation of initially isotropic turbulent flow of electrically conducting incompressible viscous fluid under the influence of an imposed homogeneous magnetic field is investigated using direct numerical simulation. Under the assumption of large kinetic and small magnetic Reynolds numbers (magnetic Prandtl number Pm[Lt ]1) the quasi-static approximation is applied for the computation of the magnetic field fluctuations. The flow is assumed to be homogeneous and contained in a three-dimensional cubic box with periodic boundary conditions. Large-scale forcing is applied to maintain a statistically steady level of the flow energy. It is found that the pathway traversed by the flow transformation depends decisively on the magnetic interaction parameter (Stuart number). If the magnetic interaction number is small the flow remains three-dimensional and turbulent and no detectable deviation from isotropy is observed. In the case of a strong magnetic field (large magnetic interaction parameter) a rapid transformation to a purely two-dimensional steady state is obtained in agreement with earlier analytical and numerical results for decaying MHD turbulence. At intermediate values of the magnetic interaction parameter the system exhibits intermittent behaviour, characterized by organized quasi-two-dimensional evolution lasting several eddy-turnover times, which is interrupted by strong three-dimensional turbulent bursts. This result implies that the conventional picture of steady angular energy transfer in MHD turbulence must be refined. The spatial structure of the steady two-dimensional final flow obtained in the case of large magnetic interaction parameter is examined. It is found that due to the type of forcing and boundary conditions applied, this state always occurs in the form of a square periodic lattice of alternating vortices occupying the largest possible scale. The stability of this flow to three-dimensional perturbations is analysed using the energy stability method.

scholarly journals Effective interaction parameter between branched and linear polystyrene

2001 ◽  
Vol 39 (21) ◽  
pp. 2549-2561 ◽  
Author(s):  
C. C. Greenberg ◽  
M. D. Foster ◽  
C. M. Turner ◽  
S. Corona-Galvan ◽  
E. Cloutet ◽  
...  
Keyword(s):  
Interaction Parameter ◽  
Effective Interaction

Effective interaction parameter between topologically distinct polymers

Polymer ◽  
1999 ◽  
Vol 40 (16) ◽  
pp. 4713-4716 ◽  
Author(s):  
C.C. Greenberg ◽  
M.D. Foster ◽  
C.M. Turner ◽  
S. Corona-Galvan ◽  
E. Cloutet ◽  
...  
Keyword(s):  
Interaction Parameter ◽  
Effective Interaction
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