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Determining SU (N) symmetry group generators
(Research gate, 2018)
SU(N) symmetry groups are useful in formulating gauge theories of elementary particle interactions
in quantum field theory. Gauge bosons and particle states are associated with the symmetry group
generators. The accuracy ...
SU (N) generator spectrum
(Research gate, 2018)
This paper provides an accurate mathematical method for determining SU(N) symmetry group generators in a general N-dimensional quantum state space. We identify the generators as well-defined quantum
state transition and ...
First Order Expectation Values of Electron Correlation Operators for Two-Electron Atoms
(SPG, 2015)
Simple analytic first-order wave functions corresponding to two-electron atoms electron correlation operators are
obtained by reduction of the Rayleigh-Schrödinger first order perturbation equation to that of one-electron ...
Generalized relativistic dynamics in a non-inertial reference frame
(Springer-Verlag, 2010)
Generalized relativistic field equations have been derived for dynamics in a non-inertial reference frame interpreted as a Finsler space where events are specified by both spacetime coordinates and corresponding velocities ...
A Direct Calculation of First-Order Wave Function of Helium
(IOP Publishing, 2010)
We develop a simple analytic calculation for the first order wave function of helium in a model in which nuclear charge screening is caused by repulsive coulomb interaction. The perturbation term, first-order correlation ...
Symmetry Dependent Analytical Pseudopotential for Helium Atom
(2019-11-11)
Electron-electron interaction is the origin of the many-body problems usually encountered in physics and chemistry. Helium atom and other two-electron
systems are the simplest many-body systems in nature. The Schr¨odinger ...
Analytical Absorption Cross-Section for Photon by a Hydrogen 2s Atom
(IOP Publishing, 2011-04)
We calculate the absorption cross-section for photon by a hydrogen 2s atom using the quantum-classical approximation for the total photo cross-section of many electron atoms. With the application of the first-order term ...
: Spray Pyrolysis Technique (SPT) was used to deposit thin films (TFs) of cadmium stannate, doped with iron (Fe) for the first time. The precursor solutions that were used wereprepared at a concentration of 0.1M, doped with Feand then sprayed onto the pre-heated glass slides immediately at deposition temperatures of 350 ± 7°C, 400 ± 7°C and 450 ± 7°C. The optical properties of the deposited Fe-doped TFs were studied in the wavelength range of 300-1100nm. The X-Ray diffraction (XRD) studies showed that the TFs were orthorhombic with growth orientation along the (2 0 0) direction. Film thickness of 85 ± 10 nm was obtained. It was found out that anincrease in the deposition temperature increased transmittance and band gap, but decreased absorption coefficient, extinction coefficient and refractive index, which was attributed to the improvement in crystallinity of the deposited TFs. Doping reduced transmittance and band gap, but increased refractive index, absorption coefficient and extinction coefficient, which was attributed to the increase in free carriers. KEYWORDS:cadmium stannate, deposition temperature, iron-doped, optical properties of cadmium stannate
(Elsevier, 2020)
The elastic properties of the orthorhombic cadmium stannate (Cd2SnO4) were investigated using density functional theory, applying both energy-strain relationship (which is found in the literature) and stress-strain ...
Quiet Time Correlation Between Geomagnetic Field Variations and the Dynamics of the East African Equatorial Ionosphere
(Science Publishing Group, 2017)
The equatorial ionosphere is highly dynamic and consequently poses serious threats to communication and
navigation systems. As a result, proper understanding of ionospheric dynamics is important. The present paper presents ...
Variability of VTEC Gradient and TEC Rate Index Over Kisumu, Kenya During Selected Quiet and Storm Days of 2013 and 2014
(Science Publishing Group, 2019)
Vertical Total electron content (VTEC) gradient or rate of change of TEC (ROT) and total electron content (TEC)
rate index or rate of change of TEC index (ROTI) can directly be estimated from receiver independent exchange ...