We study the dynamics of the three-qubit system interacting with multi-mode without rotating wave approximation (RWA). A physical realization of the system without direct qubits interactions with dephasing bath is proposed. It is shown that non-Markovian characters of the purity of the three qubits and the coupling strength of modes are stronger enough the RWA is no longer valid. The ... إقراء المزيد

We investigate the problem of reflection and refraction of thermoelastic waves at a magnetized solid-liquid interface in presence of initial stress. In the context of Green-Lindsay and coupled thermoelastic theories of thermoelasticity, the problem has been solved and the effect of magnetic field, external heat sources, and initial stress on _p_-, _T_-, and SV-waves propagation have been discussed. The boundary ... إقراء المزيد

Let i≥2">i≥2i≥2, Δ≥0">Δ≥0Δ≥0, 1≤a≤b−Δ">1≤a≤b−Δ1≤a≤b−Δ, n>(a+b)(ib+2m−2)a+n′">n>(a+b)(ib+2m−2)a+n′n>(a+b)(ib+2m−2)a+n′ and δ(G)≥b2a+n′+2m">δ(G)≥b2a+n′+2mδ(G)≥b2a+n′+2m, and let g,f">g,fg,f be two integer-valued functions defined on V(G)">V(G)V(G) such that a≤g(x)≤f(x)−Δ≤b−Δ">a≤g(x)≤f(x)−Δ≤b−Δa≤g(x)≤f(x)−Δ≤b−Δ for each x∈V(G)">x∈V(G)x∈V(G). In this article, it is determined that G">GG is a fractional (g,f,n′,m)">(g,f,n′,m)(g,f,n′,m)-critical deleted graph if max{d1,d2,···,di}≥b(n+n′)a+b">max{d1,d2,⋅⋅⋅,di}≥b(n+n′)a+bmax{d1,d2,···,di}≥b(n+n′)a+b for any independent subset {x1,x2,...,xi}⊆V(G)">{x1,x2,...,xi}⊆V(G){x1,x2,...,xi}⊆V(G). The result is tight on independent set degree condition. إقراء المزيد

Quantum computers require quantum processors. An important part of the processor of any computer is the arithmetic unit, which performs binary addition, subtraction, division and multiplication, however multiplication can be performed using repeated addition, while division can be performed using repeated subtraction. In this paper we present two designs using the reversible R3 gate to perform the quantum half adder/subtractor ... إقراء المزيد

This paper reveals dark and singular optical solitons, as well as their combinations thereof, of the perturbed Kundu–Eckhaus equation. Two integration methodologies are adopted here. The existence criteria for these solitons are also presented. إقراء المزيد

We investigate the problem of reflection and refraction of thermoelastic waves at a magnetized solid-liquid interface in presence of initial stress. In the context of Green-Lindsay and coupled thermoelastic theories of thermoelasticity, the problem has been solved and the effect of magnetic field, external heat sources, and initial stress on p-, T-, and SV-waves propagation have been discussed. The boundary ... إقراء المزيد

We analyze the dynamics of squeezing in a ballistic quantum wire with Rashba spin-orbit interaction in the presence of both strong and weak magnetic fields and for different initial states of the system. Compared to the more standard measure of squeezing based on variances, we show that entropy squeezing is a more sensitive measure. Our results show that there is ... إقراء المزيد

In this paper, we study the dynamics of entanglement between three-level atom and optical field, initially prepared in the squeezed coherent state. We discuss the dynamical behavior of the geometric phase and entanglement, measured by the von Neumann entropy, with and without rotating wave approximation during the time of evolution. The effect of the squeezing and detuning parameters on the ... إقراء المزيد

Esophageal varices is one of the most important comorbidity related liver cirrhosis, patients usually presented with hematemesis, melena, or both, ultimately 20% is the mortality during the first attack, hence we aimed to investigate the incidence of such esophageal varices related chronic Hepatitis C virus (HCV) in randomized Egyptian population One thousand eighteen Egyptian patients, aged between 17 and 58 ... إقراء المزيد

The variable-order fractional differential equations appear in modeling diverse physical problems. The main issue we address in this paper concerns an accurate numerical solution of a class of variable-order differential equations. The given problem is transformed into a system of algebraic equations using the so-called operational matrix of variable-order differentiation and the shifted LegendeGauss-Radau collocation approach. Accordingly, the effort performed ... إقراء المزيد