Browsing Quantum Physics Stream by Issue Date

Now showing items 1-20 of 32

QUANTUM EFFECTS IN THE DYNAMICS OF TRAPPED BOSE CONDENSED GASES

sulamo, Firdawok; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2016-01)

In this project, quantum theory of a weakly interacting, dilute Bose gas is presented using the formalism of second quantization. First, a calculation is performed to obtain an expression for the Hamiltonian operator ...
QUANTUM THEORY OF THE THERMODYNAMICS OF AN IDEAL BOSE GAS

bezabih, Emawayish; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2016-01)

In this project work, quantum theory of the thermodynamic properties of an ideal Bose gas is presented using quantum statistics. First a calculation is performed to obtain expressions for partition function and for ...
BERRY'S PHASE IN QUANTUM MECHANICS AND ITS APPLICATIONS

menza, Mebratu; mengesha, Elias Major Advisor (PhD) (Haramaya university, 2016-01)

The aim of this project is to explain Aharonov-Bohm effect and to study the spin-half particle using Berry phase. If we consider Quantum Hamiltonian with external magnetic field that varies in time, we can solve the time ...
QUANTIZATION OF RELATIVISTIC DIRAC FIELD AND THE SPIN STATISTICS THEOREM

tasew, Gashaw; mengesha, Elias Major Advisor (PhD) (Haramaya university, 2016-01)

In this project, attempt was made to develop the basic ideas of second quantization for a relativistic Dirac field using Lagrangian formalism in the four-dimensional space. In particular, concentration was made on the ...
QUANTUM MECHANICAL STUDY OF THE INTERACTION OF RADIATION WITH MATTER

ahmedmuz adem, Anwar; mengesha, Elias Major Advisor (PhD) (Haramaya university, 2017-05)

In this project an attempt has been made, first to present the quantum mechanical formalism of the interaction of radiation with matter, the photoionisation of an atom and the photodisintegration of a deuteron. For this ...
SPECIFIC HEAT ESTIMATION FOR FERROMAGNETS WITHIN THE FRAMEWORK OF THE ISING MODEL

bekele, Dawit; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2017-08)

This project presents the specific heat estimation for ferromagnetic material using the Ising model within the framework of the mean field approximation. First, a calculation is performed to obtain expression for partition ...
PPLICATION OF PERTURBATION THEORY TO SCHRÖDINGER EQUATION OF HYDROGEN ATOM (CASE OF FINITE-SIZE NUCLEUS)

kolbi, Urgesa; mengesha, Elias Major Advisor (PhD) (Haramaya university, 2017-08)

Corrections in energy levels of hydrogen atom are calculated using first-order perturbation theory of hydrogen atom with finite size proton. The finite size proton is used by introducing the charge density of the proton. ...
RELATIVISTIC DESCRIPTION OF ELECTRON-MUON SCATTERING REACTION

tesfaye, Mengistu; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2018-02)

In this thesis, detailed derivations of the spin-average invariant amplitude and hence the differential cross-section for unpolarized electron-muon elastic scattering are made by using lowest-order Feynman diagrams. It ...
ELECTROWEAK THEORY OF ASSOCIATED STRANGENESS PRODUCTION VIA NEUTRINO-NUCLEON INTERACTION

goa alaye, Samuel; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2018-12)

In this thesis, we present a fully relativistic description of associated production via NC neutrino-nucleon weak interaction. In the Lab frame where the target nucleon is at rest; the kinematics and dynamics of the ...
APPLICATION OF PERTURBATION THEORY AND VARIATION METHOD TO CALCULATE LOWER ENERGY LEVELS OF HELIUM ATOM

Dawed, Hassen; Mengesha, (PhD) Elise (Haramaya university, 2019-01)

This thesis presented how one found the energy and the wave function formalism of helium atom, for the lower energy level of general space dependent potential. Using perturbation and Varitional approximation method.The ...
ELECTROWEAK THEORY OF NEUTRINO-NUCLEON INTEORACTION: CASE OF NEUTRAL CURRENT PROCESSES

lambebo, Getachew; bekele, Gashaw Major Advisor (PhD) (Haramaya university, 2019-03)

In this thesis, the main purpose was provided the electroweak description of elastic neutral current (NC) neutrino-nucleon scattering in the low energy region. The relativistic formalism has allowed us allows treating the ...
ESTIMATION OF THERMODYNAMIC PROPERTIES OF IDEAL FERMI GASES THROUGH THE APPLICATION OF QUANTUM MECHANICS

Baye, Zewudu; Bekele, (PhD) Gashaw (Haramaya university, 2020-01)

In ideal Fermions system, at high temperature limit, quantum effects are small but when the temperature is lowered, quantum effects start becoming important. The main purpose of this study was to formulate thermodynamic ...
CLASSIFICATION OF WHEAT SEEDS BASED ON MORPHOLOGY AND COLOR FEATURES USING IMAGE PROCESSING TECHNIQUES

Yosef, Aschale; Abebe, (PhD) Getachew; Terefe, (PhD) Habtamu (Haramaya university, 2020-09)

Wheat is one of the most important food sources in the world. Classification of wheat grains is essential for controlling the quality of wheat for flour industry, wheat traders and wheat researchers. The main focus of this ...
SOLVING THE MODIFIED DIRAC EQUATION FOR MUON MOVING IN STRONG BACKGROUND ELECTRIC FIELD

Hajo Gemmeda, Jeylan; Bekele, (PhD) Gashaw (Haramaya university, 2020-09)

In this thesis, the covariant form of Dirac equation has been modified for a relativistic muon by incorporating the uniform background electric field through the principle of minimal coupling. The Electromagnetic (EM) field ...
PROPAGATOR OF DIRAC PARTICLES IN PRESENCE OF UNIFORM BACKGROUND MAGNETIC FIELD

Tsegaye Hailegiorgise, Ashenafi; Bekele, (PhD) Gashaw (Haramaya university, 2020-09)

The main purpose of this study is to discuss the properties of the solutions of the Dirac equation and calculate the Dirac propagator in the presence of a uniform background magnetic field. In particular the focus of the ...
APPLICATION OF ELECTROWEAK THEORY TO NEUTRINO-INDUCED SIGMA-LAMBDA HYPERONS TRANSITIONS

Yuya Hassen, Abdulaziz; Bekele, (PhD) Gashaw (Haramaya university, 2021-02)

this thesis, the electroweak description of neutrino-induced neutral weak transition between Sigma and Lambda hyperons is present. The norm-squared invariant element has been manipulated into a contraction between leptonic ...
PREVALENCE AND fACTORS ASSOCIATED WITH POSTOPERATIVE COMPLICATIONS IN PATIENTS ADMITTED TO HIWOT FANA SPECIALIZED UNIVERSITY HOSPITAL, HARAR, EASTERN ETHIOPIA

Asefa, Askual; Amin, Dr Abdi; Shure, (Assis Prof) Hirbo (Haramaya university, 2021-02)

Postoperative complication may be defined as negative outcome as perceived either by the surgeon or by the patients. It confers an increased risk of reoperation, prolonged length of stay, decline in disposition and increased ...
AUTOMATIC CLASSIFICATION OF NORMAL AND ABNORMAL HUMAN RED BLOOD CELL USING GEOMETRIC FEATURES AND FACTORS

Alaro Buba, Adane (Haramaya University, 2021-06)

Computer based diagnosis of approach enables to detect abnormalities of red blood cells. Automated computer-based diagnosis is believed to be fast and accurate if the system is properly developed and verified. The ...

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