Modified scalar potential solution for three-dimensional magnetostatic problems

1998 ◽  
Vol 83 (11) ◽  
pp. 6347-6349 ◽  
Author(s):  
K. Sivasubramaniam ◽  
S. Salon ◽  
M. V. K. Chari ◽  
I. D. Mayergoyz
2021 ◽  
Vol 36 (04) ◽  
pp. 2150021
Author(s):  
M. Farasat Shamir ◽  
Adnan Malik ◽  
G. Mustafa

This work aims to investigate the wormhole solutions in the background of [Formula: see text] theory of gravity, where [Formula: see text] is Ricci scalar, [Formula: see text] is scalar potential, and [Formula: see text] is the kinetic term. We consider spherically symmetric static space–time for exploring the wormhole geometry with anisotropic fluid. For our current analysis, we consider a particular equation of state parameter to study the behavior of traceless fluid and examine the physical behavior of energy density and pressure components. Furthermore, we also choose a particular shape function and explore the energy conditions. It can be noticed that energy conditions are violated for both shape functions. The violation of energy conditions indicates the existence of exotic matter and wormhole. Therefore, it can be concluded that our results are stable and realistic. The interesting feature of this work is to show two- and three-dimensional plotting for the analysis of wormhole geometry.


Author(s):  
Lizzy Oluwatoyin Ofusori ◽  
Ncamiso Nkululeko Jahalenkhosi Dlamini ◽  
Prabhakar Rontala Subramaniam

Bring your own device (BYOD) has infiltrated the work environment and businesses are enjoying the benefits coupled with the adoption of the trend. At the same time, the adoption of BYOD has introduced a number of security threats that businesses are failing to match. In the pursuit of addressing security threats that are introduced by the adoption of this technology trend, this chapter recommends a three-dimensional (3-D) security framework that can be used to mitigate the risks emanating from a BYOD enabled environment. Data was collected from the employees of two banks in Africa that supported BYOD trend to measure individual and organizational practices. This chapter investigates further on these practices in addressing implications of BYOD. Three categories of security threats are delineated in this chapter. A review of existing security frameworks is presented in this chapter. The chapter concludes by outlining a 3-D security framework as a potential solution to protect BYOD enabled business environment.


2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
N. Tazimi ◽  
A. Ghasempour

In this study, we investigate the relativistic Klein-Gordon equation analytically for the Deng-Fan potential and Hulthen plus Eckart potential under the equal vector and scalar potential conditions. Accordingly, we obtain the energy eigenvalues of the molecular systems in different states as well as the normalized wave function in terms of the generalized Laguerre polynomials function through the NU method, which is an effective method for the exact solution of second-order linear differential equations.


2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
M Dehghani ◽  
M Badpa

Abstract The coupled scalar, electromagnetic, and gravitational field equations of Einstein–dilaton gravity theory have been solved in a three-dimensional energy-dependent spacetime and in the presence of power-law nonlinear electrodynamics. The scalar potential is written as the linear combination of two exponential functions, and two families of three-dimensional dilatonic black hole solutions have been introduced which indicate the impacts of rainbow functions on the spacetime geometry. Through consideration of curvature scalars, it has been found that the asymptotic behavior of the solutions is neither flat nor anti-de Sitter. It has been illustrated that, with a suitable choice of parameters, the solutions can produce the two-horizon, extreme and naked singularity black holes. By calculating the black hole charge, mass, entropy, temperature, and electric potential, it has been proved that they fulfill the standard form of the first law of black hole thermodynamics. The thermodynamic stability of the black holes has been analyzed by utilizing the canonical and grand canonical ensembles and noting the signature of the black hole heat capacity and Gibbs free energy of the black holes. The points of type-1, type-2, and Hawking–Page phase transitions and the ranges at which the black holes are locally or globally stable have been determined. The geometrical thermodynamics of the black holes has been studied by use of different thermodynamic metrics, and the results of different approaches have been compared.


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