We construct and study the electrically charged, rotating black hole solution in heterotic string theory compactified on a (10 − D) dimensional torus. This black hole is characterized by its mass, angular momentum, and a (36 − 2D) dimensional electric charge vector. One of the novel features of this solution is that for D > 5, its extremal limit saturates the Bogomol’nyi bound. This is in contr...

In this paperwe present a search algorithm thatfinds useful optical quantum states which can be createdwith current technology.We apply the algorithm to the field of quantummetrologywith the goal offinding states that canmeasure a phase shift to a high precision. Our algorithm efficiently produces a number of novel solutions: wefind experimentally ready schemes to produce states that show signi...

There exist a wide temperature region (GiT < T − T c < T √ Gi), where the influence of fluctuations on the thermodynamic properties of superconductors can be taken into account in the linear (Gaussian) approximation, while their influence on the kinetic properties is strongly nonlinear. Maki-Thompson cotribution to conductivity saturates in this region. However, Aslamazov-Larkin contribution be...

It is demonstrated that the performance of the self-modulated proton driver plasma wakefield accelerator is strongly affected by the reduced phase velocity of the plasma wave. Using analytical theory and particle-in-cell simulations, we show that the reduction is largest during the linear stage of self-modulation. As the instability nonlinearly saturates, the phase velocity approaches that of t...

In this paper, we explore the possibilities and limitations of recovering sparse signals in an online fashion. Employing a mean field approximation to the Bayes recursion formula yields an online signal recovery algorithm that can be performed with a computational cost that is linearly proportional to the signal length per update. Analysis of the resulting algorithm indicates that the online al...

In high energy physics, unknown particles are identified by determining their mass from the Cherenkov radiation cone that is emitted as they pass through the detector apparatus. However, at higher particle momentum, the angle of the Cherenkov cone saturates to a value independent of the mass of the generating particle, making it difficult to effectively distinguish between different particles. ...

We investigate numerically the limits of the resonant magnetic response with a negative effective permeability mu(eff) for single-ring multicut split-ring resonator (SRR) designs up to optical frequencies. We find the breakdown of linear scaling due to the free electron kinetic energy for frequencies above approximately 100 THz. Above the linear scaling regime, the resonance frequency saturates...

With a non local shell model of magnetohydrodynamic turbulence we investigate numerically the turbulent dynamo action for low and high magnetic Prandtl numbers (Pm). The results obtained in the kinematic regime and along the way to dynamo saturation are understood in terms of a phenomenological approach based on the local (Pm ≪ 1) or non local (Pm ≫ 1) nature of the energy transfers. In both ca...

The terahertz radiation produced by a 2-color femtosecond laser scheme strongly saturates and develops an oscillatory behavior with increasing power of the driving femtosecond laser pulses. This is explained by the formation of a plasma channel due to filamentation. Due to dispersion inside the filament and the Gouy phase shift, the phase difference between the 800 nm and 400 nm pulses varies a...

The dependence of the photocurrent, in a planar metalsemiconductor-metal photodetectors (MSM), on active layer thickness and incident optical power is investigated using a two-dimensional drift-diffusion model. The model numerically solves the hasic semiconductor equations using appropriate boundary conditions at the Schottky contacts. The calculated results show good agreement with experimenta...