• Verification of Einstein General theory of Relativity with Gravitational Waves 

  Habtie, Abel (Addis Ababa University, 2021-07-11)

  Gravitational wave science is one of direct observation of the waves predicted by Einstein’s general theory of relativity and opening the exciting new field of gravitational wave astronomy. In this thesis work we study ...
• Size Dependent Optical Properties of Spherical ZnO@Cu and ZnO@Au Core/Shell Nanostructures 

  Gizat, Tesfahun (Addis Ababa University, 2022-02-19)

  In this work, we studies the effect of size and thickness variation on the optical properties of a system that consists of spherical ZnO@Cu and ZnO@Au core-shell composite nanostructures embedded in a dielectric host ...
• The Quantum Analysis of the Light Produced by Coherently Driven Degenerate Three-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to a Vacuum Reservoir 

  Mekete, Antigegn (Addis Ababa University, 2022-04-18)

  In this thesis, we analyze the statistical and squeezing properties of the light produced by a degenerate three-level atom, whose top and bottom levels are coupled by coherent light, and available in a cavity containing ...
• Physics of Cloud and Precipitation 

  Kuchi, Nigatu (Addis Ababa University, 2022-04-11)

  In this project we present a review of the physics of clouds and precipitation in the atmosphere. Thunderstorms are a global phenomenon in the mid-latitudes and tropics. They form where and whenever the ingredients for ...
• Degenerate Three-Level Atom Driven by Coherent Light and in a Cavity Coupled to Squeezed Vacuum Reservoir 

  Gizachew, Abebaw (Addis Ababa University, 2022-04-18)

  In this thesis, we analyze the squeezing and statical properties of light produced by degenerate three-level atom in a cavity coupled to squeezed vacuum reservoir via a port-mirror. The three-level atom available in the ...
• Generation of Squeezed Light by Optically Pumped Two-Level Atom in a Cavity Containing Parametric Amplifier and Coupled to Squeezed Vacuum Reservoir 

  Desta, Mulu (Addis Ababa University, 2022-04-18)

  In this thesis, we have analyzed the quantum properties of light generated by coherently driven two level atom in a cavity containing a parametric amplifier and coupled to a squeezed vacuum reservoir. The equations of ...
• The Study of the Electronic Thermal Conductivity of Superconducting Magnesium Dlboride (MgB2) 

  Beyoro, Zeleke (Addis Ababa University, 2005-06)

  For magnes ium diboride (MgB2)' some of th e superconducting pmperlies that have been studied are summari zed. The energy di spersion relation is determined and it is used to determ ine the electmnic thermal conductivity ...
• Singular Fermi Liquid low Energy Collective Fluctuation 

  Yimer, Seid (Addis Ababa University, 2005-07)

  Landau's Fermi liquid theory is analyzed theoretically. The explanation for singularity which arise due to break-down of the theory in onc dimension is considered. In part.icular , the low energy collective fluctuations ...
• Study of Superconductivity of Alkali Metal Doped A3c6o(A=K,Rb and Cs) Superconductors 

  Thlu, Berhanu (Addis Ababa University, 2005-07)

  The mechanism of superconductivity in A3C6o(A=K, Rb and Cs) appears to be one of difficult question in the theory of supercond uctivity. In this Work we try to show electronic( exciton) and phonon-exciton combined mechanism ...
• A String Theory Approach to the Three-dimensional Ising Model 

  Tadesse, Mesfin (Addis Ababa University, 1989-06)

  Th<? t hree-d i mens io nal Ising mod p.l (3D1M) ha s been one or the un solved problems i n physic s . Polyak ov has s uggested lhaL it may be pos s ible to solve this model via the st ri ng th'!Ol'Y meth ods . The 3D ...
• Thermodynamic and Statistical Description of Thermal Plasma 

  Demsis, Almaz (Addis Ababa University, 2022-03-14)

  In this project, we study the thermodynamic and statistical properties of thermal plasma using the laws of thermodynamics and statistical physics. We studied plasma as a fourth state of matter. We find the equations of ...
• Study of Mass Attenuation Coefficients of Some Human Tissues Using X-Com 

  Abajihad, Mohammed (Addis Ababa University, 2021-10-04)

  Themass attenuation coefficient of some tissues such as muscle(ICRU),adipose(ICRP) andblood(whole) and tissue equivalents such as soft tissue model (H63C6O28N) And water were investigated theoretically at different photon ...
• Radiation Processes in the Lower and Middle Atmosphere 

  Daba, Chalchisa (Addis Ababa University, 2022-01-28)

  The movement and causes of this movement in Earths atmosphere depend merely on the magnitude and distribution of the net radiative heating of the earth atmosphere system. In the troposphere, the net adiabatic heating ...
• Thermodynamics and Quantum Properties of Ultra-Relativistic Degenerate Electron Gas in White Dwarf and Neutron Stars 

  Ali, Ibrahim (Addis Ababa University, 2022-01-07)

  We study the problem of the relativistic free electron gas at arbitrary degenerate electron gas. The speci_c heat at constant volume and particle number cv and the speci_c heat at constant pressure and particle number ...
• Investigation of the Optical Properties of Dielectric Metal Core Shell Spherical Nanostructures by Employing the Mie Theory 

  Ayele, Yohannes (Addis Ababa University, 2022-01-25)

  In this project, we present the investigation of the optical properties of dielectric/metal core/shell spherical nanostructures by employing the Mie theory. In this work, the nanomaterials, historical background, definition, ...
• Density and Temperature Dependent of Charge Carriers Mobility in Disordered Organic Semiconductors Monte Carlo Simulation Method 

  Geto, Derib (Addis Ababa University, 2022-02-26)

  We begin the analysis of transport of charge carriers in organic semiconductors, focusing on the depen- dence of charge carriers mobility on density, external electric _eld and temperature. We start with the formulation ...
• Climatology of the Lower and Middle Atmosphere 

  Tesfaye, Befikadu (Addis Ababa University, 2022-02-26)

  Climate change is one of the de_ning issues of our time. It is now more certain than ever based on many lines of evidence that humans are changing the earth's climate. The atmosphere and oceans have warmed, accompanied ...
• Boltzmann Transport Equation for Degenerate Electron Gas in Semiconductor in the Presence of Electric Field 

  Mulugeta, Desalegn (Addis Ababa University, 2022-02-06)

  The effect created by the applied electric field and temperature gradient on the electrons in a semiconductor is to change the distribution function of electrons from its equilibrium condition. In the absence of external ...
• Determination of Size Distribution Function (SDF) by Electpooptical Method 

  Abay, Teshome (Addis Ababa University, 1985-06)

  When particles. Are in polare medi.um the molecules of the liquid'Will ahsorb on the surfaces. of the particles.

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