Statistics of coherent waves inside media with Lévy disorder

نویسندگان

چکیده

Structures with heavy-tailed distributions of disorder occur widely in nature. The evolution such systems, as foraging for food or the occurrence earthquakes is generally analyzed terms an incoherent series events. But study wave propagation lasing systems requires consideration coherent scattering. We consider distribution energy inside 1D random media which spacing between scatterers follow a L\'evy $\alpha$-stable characterized by power-law decay exponent $\alpha$. show that averages intensity and logarithmic are given average logarithm transmission depth into sample raised to power Mapping number scattering elements yields statistics identical those found Anderson localization standard media. This allows separation impacts coherence

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Second-order statistics of non-Gaussian fluctuations of coherent waves reflected from disordered media.

We show that the second-order statistics of speckle patterns of scalar waves, multiply scattered on reAection by disordered media, may be non-Gaussian, even though the first-order statistics are Gaussian. This occurs at intermediate sizes of the illuminated samples of the medium that are large enough to produce Gaussian first-order statistics of the scattered field but are small enough to break...

متن کامل

Nonlinear coherent transport of waves in disordered media.

We present a diagrammatic theory for coherent backscattering from disordered dilute media in the nonlinear regime. We show that the coherent backscattering enhancement factor is strongly affected by the nonlinearity, and we corroborate these results by numerical simulations. Our theory can be applied to several physical scenarios such as scattering of light in a nonlinear Kerr medium or propaga...

متن کامل

Search in Random Media with Lévy Flights

Our work on the subject of search has been motivated by a variety of applications in engineering and technology, and it differs from the physicists’ motivation for such problems, e.g., or the motivation provided by biochemistry, and in theoretical biology . One of our reasons for a more fundamental approach to search comes from the area of traffic routing in wired networks where each end user m...

متن کامل

Lévy flights in inhomogeneous media.

We investigate the impact of external periodic potentials on superdiffusive random walks known as Lévy flights and show that even strongly superdiffusive transport is substantially affected by the external field. Unlike ordinary random walks, Lévy flights are surprisingly sensitive to the shape of the potential while their asymptotic behavior ceases to depend on the Lévy index mu. Our analysis ...

متن کامل

Random Matrix Line Shape Theory with Applications to Lévy Statistics ∗

A model system of a bright state coupled to a manifold of dark states is analyzed with regard to the width distributions of the dark manifold induced in the bright state. Independent box shaped distributions are assumed for the energy distributions, the coupling distributions and the dark level width-distributions. The width distributions induced via the couplings from the dark levels into the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical review research

سال: 2021

ISSN: ['2643-1564']

DOI: https://doi.org/10.1103/physrevresearch.3.023035