It is well known that the linear electrical response of periodic composites with a microstructure that has sufficiently high symmetry is isotropic. I.e., the macroscopic conductivity or permittivity of such a system, in the absence of an external magnetic field, is a scalar quantity. This is the...

This paper aims at increasing our insights into the way financial markets respond to news. We view the market as a (nonlinear) filter of news on fundamentals. A stylized version of this situation is obtained by considering by a time dependent dividend rate which is driving the market. To model...

A new variational principle of steady states is found by introducing an integrated type of energy dissipation (or entropy production) instead of instantaneous energy dissipation. This new principle is valid both in linear and nonlinear transport phenomena. Prigogine’s dream has now been...

We study the electronic states and current–voltage (I–V) characteristics of junction systems with atomic-scale nanocontacts as a function of the distance between electrodes by using the first-principles recursion-transfer-matrix (RTM) method combined with nonequilibrium Green function (NEGF)...

A deeper understanding of quantum effects in nano-electronic devices helps to improve the functionality and to develop new device types. The performance of carbon nanotube (CNT) field-effect transistor is studied using the non-equilibrium Green’s function (NEGF) formalism. The effects of...

The femtosecond dynamics of highly non-equilibrium, confined carriers is analyzed within a Monte Carlo approach. The physical process considered corresponds to a locally excited or injected into a semiconductor nanowire distribution of heated carriers, which evolve under the action of an applied...

In this paper, the long time and short time behavior of a free quantum Brownian particle and of a quantum harmonic oscillator coupled to a quantum heat bath is investigated for different spectral density functions. Not only are the usual Ohmic, Drude or radiation heat bath schemes employed to...

The statistical theory of certain complex wave interference phenomena, like the statistical fluctuations of transmission and reflection of waves, is of considerable interest in many fields of physics. In this article, we shall be mainly interested in those situations where the complexity derives...

We predict a multifractal behavior of transport in the deep quantum regime for the opened δ-kicked rotor model. Our analysis focuses on intermediate and large scale correlations in the transport signal and generalizes previously found parametric mono-fractal fluctuations in the quantum survival...

We study the statistical properties of wave transport in a disordered waveguide. We first derive the properties of a “building block” (BB) of length δL starting from a potential model consisting of thin potential slices. We then find a diffusion equation—in the space of transfer matrices...