The critical value for some non-attractive long range nearest particle systems

1992 ◽  
Vol 93 (1) ◽  
pp. 67-76 ◽  
Author(s):  
T. S. Mountford
Keyword(s):  
Long Range ◽  
Critical Value ◽  
Particle Systems

Search for Explaining the Staebler-Wronski Effect

1997 ◽  
Vol 467 ◽  
Author(s):  
H. Fritzsche ◽  
Tucson Az
Keyword(s):  
Spatial Correlation ◽  
Long Range ◽  
Photon Energy ◽  
Structural Changes ◽  
Hydrogen Diffusion ◽  
Critical Value ◽  
Bond Breaking ◽  
Dangling Bond ◽  
High Fields ◽  
Staebler Wronski Effect

ABSTRACTFor twenty years we searched to understand the Staebler-Wronski effect (SWE). New results continue to emerge which invalidate prior interpretations. Recent evidence shows that the SWE is not associated with impurities. Long-range hydrogen diffusion is ruled out because the SWE occurs with comparable efficiency between 400K and the lowest temperatures. Nonradiative geminate recombinations might be important since high fields reduce the SWE significantly. It disappears when the bandgap or the photon energy falls below a critical value. The creation of a metastable density of dangling bond defects has been considered to be its sole manifestation. However, there is mounting evidence for light-induced structural changes which extend throughout the material. The weak bond breaking model emerges as the only viable explanation of the SWE if the expected spatial correlation between defects and hydrogen is destroyed by subsequent recombination events. The SWE is reduced by a favorable microstructure and low hydrogen content. It is suggested that defect pairs have larger recombination coefficients than isolated defects.

CORRELATION IDENTITIES FOR NEAREST-PARTICLE SYSTEMS AND THEIR APPLICATIONS TO ONE-DIMENSIONAL CONTACT PROCESS

1991 ◽  
Vol 05 (02) ◽  
pp. 151-159 ◽  
Author(s):  
NORIO KONNO ◽  
MAKOTO KATORI
Keyword(s):  
Order Parameter ◽  
Particle System ◽  
Contact Process ◽  
Critical Value ◽  
Particle Systems ◽  
Approximation Formula ◽  
One Dimensional ◽  
Renewal Measure ◽  
First Approximation ◽  
The One

A series of identities of correlation functions K(n1, n2, …, nN) are given in the nearest-particle system. The above correlation identities are applied to the one-dimensional contact process. The decoupling induced by a renewal measure yields the first approximation: [Formula: see text] for the critical value and [Formula: see text] for the order parameter, which makes a rigorous bound as proved by Holley and Liggett. Furthermore, introducing a new decoupling procedure, improved estimations of [Formula: see text] and [Formula: see text] are calculated.

scholarly journals Macroscopic evolution of particle systems with short- and long-range interactions

Nonlinearity ◽  
2000 ◽  
Vol 13 (6) ◽  
pp. 2143-2162 ◽  
Author(s):  
Giambattista Giacomin ◽  
Joel L Lebowitz ◽  
Rossana Marra
Keyword(s):  
Long Range ◽  
Particle Systems ◽  
Long Range Interactions
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