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Titolo:
PROPAGATION IN RANDOM-MEDIA - CALCULATION OF THE EFFECTIVE DISPERSIVEPERMITTIVITY BY USE OF THE REPLICA METHOD
Autore:
BARTHELEMY M; ORLAND H; ZERAH G;
Indirizzi:
CTR ETUD LIMEIL VALENTON,STATE ATOM ENERGY COMMISS F-94195 VILLENEUVEST GEO FRANCE CTR ETUD SACLAY,CEA,SERV PHYS THEOR F-91191 GIF SUR YVETTE FRANCE
Titolo Testata:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
fascicolo: 1, volume: 52, anno: 1995,
parte:, B
pagine: 1123 - 1127
SICI:
1063-651X(1995)52:1<1123:PIR-CO>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIELD-THEORY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
M. Barthelemy et al., "PROPAGATION IN RANDOM-MEDIA - CALCULATION OF THE EFFECTIVE DISPERSIVEPERMITTIVITY BY USE OF THE REPLICA METHOD", Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(1), 1995, pp. 1123-1127

Abstract

In this paper we use the replica method together with a variational method in order to study the propagation of a wave traveling in a disordered composite. We compute the effective permittivity tenser, which takes into account the effects of spatial dispersion. Our calculation is not perturbative in the frequency, and we obtain a self-consistent formula for the longitudinal and transverse parts of the permittivity tenser applicable to the whole range of frequency. Our result appears as a self-consistent version of the usual weak-disorder expansion and thus recovers all weak-disorder results. We have checked that the solution to the self-consistent equations is correct in the limits of high and low spatial frequency.

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Documento generato il 12/07/20 alle ore 03:02:50