scholarly journals LEVEL REARRANGEMENT IN EXOTIC ATOMS AND QUANTUM DOTS

2007 ◽  
Vol 21 (22) ◽  
pp. 3765-3781 ◽  
Author(s):  
MONIQUE COMBESCURE ◽  
AVINASH KHARE ◽  
ASHOK K. RAINA ◽  
JEAN-MARC RICHARD ◽  
CAROLE WEYDERT
Keyword(s):  
Quantum Dots ◽  
Long Range ◽  
Short Range ◽  
Condensed Matter ◽  
Attractive Potential ◽  
Condensed Matter Physics ◽  
Exotic Atoms ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Harmonic Confinement

A presentation and a generalization are given of the phenomenon of level rearrangement. This occurs when an attractive long-range potential is perturbed by a short-range attractive potential as its strength is increased. This phenomenon was first discovered in condensed matter physics and has also been studied in the physics of exotic atoms. A similar phenomenon occurs in a model that we propose, inspired by quantum dots, where a short-range interaction is added to a harmonic confinement.

scholarly journals Longitudinal and transverse coupling in infrared gold nanoantenna arrays: long range versus short range interaction regimes

2011 ◽  
Vol 19 (16) ◽  
pp. 15047 ◽  
Author(s):  
Daniel Weber ◽  
Pablo Albella ◽  
Pablo Alonso-González ◽  
Frank Neubrech ◽  
Han Gui ◽  
...  
Keyword(s):  
Long Range ◽  
Short Range ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Nanoantenna Arrays

PECULIARITIES OF ORDERING DUE TO DISORDER IN PLANAR ANTIFERROMAGNETIC DEGENERATE STRUCTURES

1997 ◽  
Vol 04 (01) ◽  
pp. 9-14
Author(s):  
V. M. ROZENBAUM
Keyword(s):  
Long Range ◽  
Short Range ◽  
Dipole Moments ◽  
Range Order ◽  
Square Lattice ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Long Range Interaction ◽  
2D System ◽  
Ground State Degeneracy

A model is suggested which allows a description of low-temperature behavior for a 2D system of dipole moments on a square lattice with an arbitrary anisotropic long-range interaction giving rise to continuously degenerate antiferromagnetic ground states. It is shown that the breaking of the ground-state degeneracy and intersublattice ordering of dipole moments caused by thermodynamic fluctuations are responsible for long-range-order initiation in systems with anisotropic interaction and for short-range-order conservation in systems with isotropic short-range interaction.

Static critical behaviors in random-spin systems with short-range interaction

1978 ◽  
Vol 56 (1) ◽  
pp. 139-148 ◽  
Author(s):  
Yoshitake Yamazaki
Keyword(s):  
Short Range ◽  
Spin Systems ◽  
Three Dimensions ◽  
Index Formula ◽  
Spin Component ◽  
Renormalization Group Theory ◽  
Short Range Interaction ◽  
Range Interaction ◽  
The Stability ◽  
Component Models

Critical behaviors in quenched random-spin systems with N-spin component are studied in the limit M → 0 of the non-random MN-component models by means of the renormalization group theory. As the static critical phenomena the stability of the fixed points is investigated and the critical exponents η[~ O(ε3); ε ≡ 4 – d], γ, α, and crossover index [Formula: see text] and the equation of state [~ O(ε)] are obtained. Within the approximation up to the order ε2, even the random-spin systems with N = 2 or 3 are unstable in the three dimensions and the pure systems are stable there.

scholarly journals Short-Range Interaction Impact on Two-Dimensional Dipolar Scattering

2018 ◽  
Vol 173 ◽  
pp. 06008 ◽  
Author(s):  
Eugene A. Koval ◽  
Oksana A. Koval
Keyword(s):  
Cross Section ◽  
Short Range ◽  
Strong Dependence ◽  
Dipolar Interaction ◽  
Two Dimensional ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Interaction Radius ◽  
Ultracold Polar Molecules ◽  
Spatial Dimensions

We report numerical investigation of the short range interaction influence on the two-dimensional quantum scattering of two dipoles. The model simulates two ultracold polar molecules collisions in two spatial dimensions. The used algorithm allows us to quantitatively analyse the scattering of two polarized dipoles with account for strongly anisotropic nature of dipolar interaction. The strong dependence of the scattering total cross section on the short range interaction radius was discovered for threshold collision energies. We also discuss differences of calculated scattering cross section dependencies for different polarisation axis tilt angles.

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