Results 1 to 10 of about 1,885,669 (194)

Anomalous Fluctuations of Directed Polymers in Random Media

open access: yes, 1993
A systematic analysis of large scale fluctuations in the low temperature pinned phase of a directed polymer in a random potential is described. These fluctuations come from rare regions with nearly degenerate ``ground states''.
A. J. McKane   +46 more
core   +2 more sources

Nonclassical Particle Transport in 1-D Random Periodic Media [PDF]

open access: yes, 2016
We investigate the accuracy of the recently proposed nonclassical transport equation. This equation contains an extra independent variable compared to the classical transport equation (the path-length $s$), and models particle transport taking place in ...
Krycki, Kai   +2 more
core   +2 more sources

Solute transport in aquifers with evolving scale heterogeneity

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
Transport processes in groundwater systems with spatially heterogeneous properties often exhibit anomalous behavior. Using first-order approximations in velocity fluctuations we show that anomalous superdiffusive behavior may result if velocity fields ...
Suciu N.   +6 more
doaj   +1 more source

MEDIA PEMBELAJARAN TEMATIK “PAPAN ACAK KATA” UNTUK MENINGKATKAN KEMAMPUAN MEMBACA SISWA KELAS VB SD N 2 PADOKAN

open access: yesElementary School, 2019
This study aims to determine the effectiveness of the development of concrete-based learning media "RANDOM WORD BOARD" on the thematic learning system class VBSDN 2 Padokan. The study was conducted based on the current curriculum that uses the concept of
Sukadari Sukadari
doaj   +1 more source

Interacting Arrays of Steps and Lines in Random Media

open access: yes, 1996
The phase diagram of two interacting planar arrays of directed lines in random media is obtained by a renormalization group analysis. The results are discussed in the contexts of the roughening of reconstructed crystal surfaces, and the pinning of flux ...
D. Carpentier   +21 more
core   +1 more source

Quantum boomeranglike effect of wave packets in random media [PDF]

open access: yes, 2019
We unveil an original manifestation of Anderson localization for wave packets launched with a finite average velocity: after an initial ballistic motion, the center of mass of the wave packet experiences a retroreflection and slowly returns to its ...
Cherroret, Nicolas   +2 more
core   +3 more sources

Superfluid $^3$He in globally isotropic random media

open access: yes, 2009
Recent theoretical and experimental studies of superfluid $^3$He in aerogels with a global anisotropy, e.g., due to an external stress, have definitely shown that the A-like phase with an equal spin pairing (ESP) in such aerogel samples is in the ABM (or,
A. A. Abrikosov   +13 more
core   +1 more source

Radiation Transport in Random Media With Large Fluctuations

open access: yesEPJ Web of Conferences, 2017
Neutral particle transport in media exhibiting large and complex material property spatial variation is modeled by representing cross sections as lognormal random functions of space and generated through a nonlinear memory-less transformation of a ...
Olson Aaron, Prinja Anil, Franke Brian
doaj   +1 more source

Angularly resolved reflectance from random and aligned semi-infinite media

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
The angularly resolved reflectance from semi-infinite turbid media is investigated using the Monte Carlo method. Turbid media with random and aligned microstructures are considered.
A. Kienle, F. Foschum
doaj   +1 more source

Bi-functional nonlinearities in monodisperse ZnO nano-grains - Self-consistent transport and random lasing

open access: yes, 2014
We report a quantum field theoretical description of light transport and random lasing. The Bethe-Salpeter equation is solved including maximally crossed diagrams and non-elastic scattering. This is the first theoretical framework that combines so called
Frank, Regine, Lubatsch, Andreas
core   +1 more source

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