3,941 research outputs found
Solving Singular Boundary Value Problems Using Daftardar-Jafari Method
In this paper, we apply the suggested iterative method by Daftardar and Jafari hereafter called Daftardar-Jafari method for solving singular boundary value problems. In the implementation of this new method, one does not need the computation of the derivative of the so-called Adomian polynomials. The method is quite efficient and is practically well suited for use in these problems. Two illustrative examples has been presented
Conductivity and Shear Viscosity of -Yang-Mills AdS Black Brane
In this paper, a non-abelian -Yang-Mills AdS black brane solution is
introduced. Then, the color non-abelian direct current (DC) conductivity and
shear viscosity to entropy density ratio of this model is calculated by
fluid-gravity duality. Our results show that the Kovtun, Son and Starinets
(KSS) bound is saturated and is exactly equal to but the
color conductivity bound is violated for this model. Also, our outcomes recover
the Yang-Mills AdS black brane when the coupling of Yang-Mills and gravity
fields is went to zero.Comment: 9 Pages, no figure, submitted to INJ
Baryon Binding Energy in Sakai-Sugimoto Model
The binding energy of baryon has been studied in the dual
string theory with a black hole interior. In this picture baryon is constructed
of a brane vertex wrapping on and fundamental strings
connected to it. Here, we calculate the baryon binding energy in Sakai-Sugimoto
model with a in which the supersymmetry is completely
broken. Also we check the dependence of the baryon binding energy. We
believe that this model represents an accurate description of baryons due to
the existence of Chern-Simones coupling with the gauge field on the brane. We
obtain an analytical expression for the baryon binding energy . In that case we
plot the baryon binding energy in terms of radial coordinate. Then by using the
binding energy diagram, we determine the stability range for baryon
configuration. And also the position and energy of the stable equilibrium point
is obtained by the corresponding diagram. Also we plot the baryon binding
energy in terms of temperature and estimate a critical temperature in which the
baryon would be dissociated.Comment: 14 pages, 1 fi
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