INVESTIGADORES
CONDAT Carlos Alberto
artículos
Título:
Crossover in the Anderson transition: acoustic localization with a flow
Autor/es:
S.M. COHEN; J. MACHTA; T.R. KIRKPATRICK; C.A. CONDAT
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
The American Physical Society
Referencias:
Año: 1987 vol. 58 p. 785 - 788
ISSN:
0031-9007
Resumen:
Acoustic waves propagating in a sufficiently disordered medium are localized because of multiple elastic scattering. The presence of a uniform flow in the medium breaks time-reversal invariance and changes the mechanism of localization. A field theory incorporating the crossover induced by a flow field is described and the crossover behavior of the localization lengthis calculated. An experimental realization of this phenomenon is proposed, using third sound in a superfluid film on a rough substrate with a uniform superfluid flow.
