Verification of a localization criterion for several disordered media

Criterion for light localization in random amplifying media

Dimensionless conductance for light propagating through a random medium with amplification tends to diverge with an increase of gain. This raises questions on the applicability of the localization criteria based on this quantity. To circumvent this problem, we study the properties of the ratio between the transmission (conductance) and the energy stored in the random medium. We argue that the g...

Localization of phonon polaritons in disordered polar media.

The localization of the hybrid modes of phonons and photons in polar matter is investigated in the presence of random scatterers theoretically. We employ the self-consistent generalized Born-Huang approach to derive effective equations describing the phonon-polariton fields. Based on these equations, the density of states and various localization properties are exploited in two-dimensional syst...

Anderson Localization of Electromagnetic Waves in Confined Disordered Dielectric Media

DETAC: a discriminative criterion for speaker verification

This paper introduces a general criterion applicable to discriminative training of detection systems, and discusses its particular implementation in GMM-based text-independent speaker verification. Based on an analysis of the detection error trade-off curve of a baseline system, we argue that the new criterion extends several conventional methods such as the maximum posterior training by logist...

Localization of quasiparticles in a disordered vortex

We study the diffusive motion of low-energy normal quasiparticles along the core of a single vortex in a dirty, type-II, s-wave superconductor. The physics of this system is argued to be described by a one-dimensional supersymmetric nonlinear σ model, which differs from the σ models known for disordered metallic wires. For an isolated vortex and quasiparticle energies less than the Thouless ene...