We have exactly solved a model of equidistant cascade four-level system interacting with a single-mode radiation field both semiclassically and quantum mechanically by exploiting its similarity with Jaynes-Cummings model. For the classical field, it is shown that the Rabi oscillation of the system initially in the first level (second level) is similar to that of the system when it is initially ...

Projections of regional changes in seasonal surface-air temperature and precipitation for the eastern and western Zambezi River Basin regions are presented. These projections are cast in a probabilistic context based on a numerical hybridization technique of the MIT Integrated Global System Model. Unconstrained emissions send the majority of outcomes in spring precipitation to a drying by 2050,...

In this paper, a finite element modeling via ABAQUS/Explicit simulation on a novel fabrication miniature composite fuselage structure is presented. The fuselage structure is modeled as a continuum composite layup that consisted of a woven C-glass fiber/epoxy 200 g/m 2 composite laminated [908] with the orthotropic elastic material properties and adhesively bonded butt joint. The adhesively bond...

Stability of a power grid’s synchronous operating mode is crucial to its reliable function. We quantify the stability of this operating mode in different humble power grid layouts that we numerically simulate employing a widely used electro-mechanical model. The method with which we quantify stability delivers a single number, called basin stability, for each node in a grid. A node with a poor ...

1 Introduction Tungsten has been studied for 10 years on ASDEX Upgrade as a possible first wall material for fusion reactors [1]. The feasibility and the performance of the advanced scenarios are assessed, in order to deal with the technological challenges of a burning plasma. In particular hybrid scenarios, such as ASDEX Upgrade's improved H-mode discharges, require high heating power, a chall...

Projections of regional changes in seasonal surface-air temperature and precipitation for the eastern and western Zambezi River Basin regions are presented. These projections are cast in a probabilistic context based on a numerical hybridization technique of the MIT Integrated Global System Model. Unconstrained emissions send the majority of outcomes in spring precipitation to a drying by 2050,...

Quantum fluctuations in the mazer are considered, arising either from the atomic motion or from the quantized intracavity field. Analytical results, for both the meza and the hyperbolic secant mode profile, predict for example an attenuation of tunneling resonances due to such fluctuations. The case of a Gaussian mode profile is studied numerically using a wave packet propagation approach. The ...

We investigate stability of a gravitationally collapsing iron core against non-spherical perturbation. The gravitationally collapsing iron core is approximated by a similarity solution for dynamically collapsing polytropic gas sphere. We find that the similarity solution is unstable against non-spherical perturbations. The perturbation grows in proportion to (t − t0) −σ while the the central de...

Neutral spin texture (ST) excitations at nu=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of eta...

We report a Raman scattering study of low-temperature, pressure-induced melting of the charge-density-wave (CDW) phase of 1T-TiSe2. Our measurements reveal that the collapse of the CDW state occurs in three stages: (i) For P<5 kbar, the pressure dependence of the CDW amplitude mode energies and intensities are indicative of a "crystalline" CDW regime; (ii) for 5<P<25 kbar, there is a decrease i...