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 ...

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 ...

This thesis provides a relativistic description of electron-positron scattering and pair annihilation in quantum electrodynamics. By evaluating the modulus square of the invariant matrix elements, the differential ...

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 ...

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 ...

In this study, the grand canonical partition function has been employed to estimate the chemical potential, internal energy, equation of state, specific heat and entropy of the non-interacting Bose gas in low temperature ...

The main purpose of this study is to provide the quantum description for the Vacuum polarization contribution to the radiative correction of the scattering of electron by coulomb potential. Using Feynman rules of quantum ...

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 ...

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 ...