scholarly journals Persistent Currents in Interacting Systems: Role of the Spin

1997 ◽  
Vol 7 (7) ◽  
pp. 877-887 ◽  
Author(s):  
Georges Bouzerar ◽  
Didier Poilblanc
Keyword(s):  
Persistent Currents ◽  
Interacting Systems

scholarly journals Geophysical fluid dynamics: whence, whither and why?

2016 ◽  
Vol 472 (2192) ◽  
pp. 20160140 ◽  
Author(s):  
Geoffrey K. Vallis
Keyword(s):  
Fluid Dynamics ◽  
General Circulation ◽  
Condensed Matter ◽  
General Circulation Models ◽  
Condensed Matter Physics ◽  
Geophysical Fluid Dynamics ◽  
Emergent Phenomena ◽  
Interacting Systems ◽  
Geophysical System

This article discusses the role of geophysical fluid dynamics (GFD) in understanding the natural environment, and in particular the dynamics of atmospheres and oceans on Earth and elsewhere. GFD, as usually understood, is a branch of the geosciences that deals with fluid dynamics and that, by tradition, seeks to extract the bare essence of a phenomenon, omitting detail where possible. The geosciences in general deal with complex interacting systems and in some ways resemble condensed matter physics or aspects of biology, where we seek explanations of phenomena at a higher level than simply directly calculating the interactions of all the constituent parts. That is, we try to develop theories or make simple models of the behaviour of the system as a whole. However, these days in many geophysical systems of interest, we can also obtain information for how the system behaves by almost direct numerical simulation from the governing equations. The numerical model itself then explicitly predicts the emergent phenomena—the Gulf Stream, for example—something that is still usually impossible in biology or condensed matter physics. Such simulations, as manifested, for example, in complicated general circulation models, have in some ways been extremely successful and one may reasonably now ask whether understanding a complex geophysical system is necessary for predicting it. In what follows we discuss such issues and the roles that GFD has played in the past and will play in the future.

DIFFUSION IN PERIODIC INTERACTING SYSTEMS: QUASI-ELASTIC SPECTRUM IN BISTABLE POTENTIALS

2002 ◽  
Vol 16 (32) ◽  
pp. 4887-4896 ◽  
Author(s):  
M. MAZROUI ◽  
A. JAOUAD ◽  
L. EL ARROUM ◽  
Y. BOUGHALEB ◽  
R. FERRANDO
Keyword(s):  
Low Temperature ◽  
Structure Factor ◽  
Dynamic Structure ◽  
Oscillatory Behavior ◽  
Dynamic Structure Factor ◽  
Half Maximum ◽  
Scattering Wave ◽  
Interacting Systems ◽  
Bistable Potentials

Mechanism of ion transport in periodic interacting systems is investigated by employing the Fokker–Planck approach. This is done through an investigation of the quasielastic peak in the dynamic structure factor S(q, ω). Its half width at half maximum (hwhm) exhibits an oscillatory behavior as a function of the scattering wave-vectors q, reflecting the role of correlations among diffusing particles. All calculations are performed at low temperature and at high friction limit.

scholarly journals Persistent currents in multichannel interacting systems

1995 ◽  
Vol 52 (15) ◽  
pp. 10772-10775 ◽  
Author(s):  
Georges Bouzerar ◽  
Didier Poilblanc
Keyword(s):  
Persistent Currents ◽  
Interacting Systems
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