Results 1 - 10 of 5889
Results 1 - 10 of 5889. Search took: 0.026 seconds
|Sort by: date | relevance|
[en] Using the nonequilibrium Keldysh Green function technique, the influence of intradot Coulomb interactions on conductance for a parallel-coupled triple quantum dot system is investigated. The conductance as a function of electron energy is numerically calculated. The combined effect of the intradot Coulomb interaction and the magnetic flux leads to an intricate conductance lineshape. Moreover, both the magnetic flux and the interdot coupling strength may modulate the Fano effect.
[en] A new generalized fifth-order nonlinear integrable equation is examined. The Hereman-Nuseir method is used to derive the conditions for the cases of complete integrability of this equation. Multiple soliton solutions are formally derived cases of integrability. The resonance phenomenon of each integrable equation is investigated.
[en] Chalcogenide glasses or amorphous semiconductors are materials applicable in the field of optoelectronics. Microstructural and thermal analyses can provide useful information to understand the physical behavior of such materials. This paper is devoted to exploring the localized microstructural growth and kinetics of Se98-xZn2Inx (0≤x≤10) glassy alloys. Localized microstructural growth within the glassy morphology has been studied using a scanning electron microscope. Kinetic properties such as glass-forming ability peak crystallization activation energy (Ep) and Hruby number (Hr) dynamical thermal stability were obtained from a differential scanning calorimetry measurement analysis. The results reveal that the localized microstructural growth and kinetics parameters of Se98-xZn2Inx glasses vary with the concentration of alloys.
[en] A scheme for chaotic synchronization of two mesoscopic shunted resistive-capacitive-inductive Josephson junctions by means of a third common van der Pol oscillator (the master system) is presented in this paper. The output signal from the latter system in its highly nonlinear state is used to drive both junctions (the slave system). Our numerical calculations demonstrate that the junctions are in chaotic states (positive Lyapunov exponent) prior to being coupled to the master drive, and can be synchronized when they are in their periodic states. It is also revealed that the synchronization state of both junctions is controlled by the driving intensity and damping parameter of the van der Pol oscillator. The bifurcation from chaotic to periodic behaviour or vice versa occurs by altering the external dc bias current passing through the system. The complementary role of the damping parameter and the bias current in controlling synchronization is demonstrated.
[en] We consider a nondegenerate three-level cascade laser driven by a classical field with a parametric oscillator. The dynamic evolution of the master equation is investigated and the steady-state entanglement between two modes is investigated. We show that introducing the parametric oscillator can enhance the entanglement between the two-mode cavity. In particular, with the help of the classical field, a high intensity of entangled light between the two modes can be achieved.
[en] The approximate analytical bound-state solution of the Schroedinger equation for the Manning-Rosen (MR) potential is found by taking a new approximation scheme to the orbital centrifugal term. The Nikiforov-Uvarov method is used in the calculations. We obtain analytic forms for the energy eigenvalues and the corresponding normalized wave functions in terms of Jacobi polynomials or hypergeometric functions for different screening parameters 1/b. The rotational-vibrational energy states for a few diatomic molecules are calculated for arbitrary quantum numbers n and l with different values of the potential parameter α. The present numerical results agree within five decimal digits with the previously reported results for different 1/b values. A few special cases of the s-wave (l=0) MR potential and the Hulthen potential are also studied.
[en] In ultracold neutral plasmas the ions are strongly coupled in the liquid phase, while the electrons are weakly coupled. The effect of strong ion correlations on the dispersion relation of possible ion-beam plasma instabilities is considered.
[en] We follow Sirlin's procedure to compute the radiative corrections to the decay Ω-→Λ+K-. We work up to first order in the fine structure constant α and split these corrections into model-independent and model-dependent parts. The former is calculated explicitly and the latter is shown to be absorbed into the so-called decay amplitudes or form factors.
[en] The effects of wall thickness on the resistive wall mode (RWM) are studied in a slab geometry with and without plasma flow. The wall thickness can have a large effect on both the linear growth rate and the nonlinear saturation level of the RWM for a low flow velocity. The effect of the wall thickness on the RWM becomes much weaker for a high flow velocity. We found that there is an optimum wall thickness that suppresses the linear growth rate. The plasma flow can also help to control the growth of the RWM. The optimum wall thickness is about δ∼ 0.04-0.07, and decreases with increasing plasma flow velocity, but is almost independent of the wall location. The effect of the plasma flow on the saturation level is much weaker than that of the wall thickness because the duration of the linear growth phase increases with increasing flow velocity. Finally, we find that the RWM is completely stabilized in the regime with a large wall thickness.