On the radius of spatial analyticity for the Klein-Gordon-Schrödinger system

On the Radius of Spatial Analyticity for the 1d Dirac-klein-gordon Equations

We study the well-posedness of the Dirac-Klein-Gordon system in one space dimension with initial data that are analytic in a strip around the real axis. It is proved that for short times t the radius of analyticity σ(t) of the solutions remains constant while for |t| → ∞ we obtain a lower bound σ(t) ≥ c/|t|5+ in the case of positive Klein-Gordon mass and σ(t) ≥ c/|t|8+ in the massless case.

“the effect of risk aversion on the demand for life insurance: the case of iranian life insurance market”

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...

WAVELET SOLUTIONS OF THE KLEIN-GORDON EQUATION

Generalized solitary wave solutions for the Klein-Gordon-Schrödinger equations

Some new generalized solitary solutions of the Klein–Gordon–Schrödinger equations are obtained using the Exp-function method, which include some known solutions obtained by the F-expansion method and the homogeneous balance method in the open literature as special cases. It is shown that the Exp-function method is a straight, concise, reliable and promising mathematical tool for solving nonline...

Analytical solutions for the fractional Klein-Gordon equation

In this paper, we solve a inhomogeneous fractional Klein-Gordon equation by the method of separating variables. We apply the method for three boundary conditions, contain Dirichlet, Neumann, and Robin boundary conditions, and solve some examples to illustrate the effectiveness of the method.