Browsing by Author "Mengistu, Haimanot"
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Item Calculation of Electron Self Energy and Vaccum Polarization by using the Method of Dimensional Regularization(Addis Ababa University, 2011-06) Mengistu, Haimanot; Bhatnagar, Shashank (PhD)In this paper interacting quantum elds,electron self-energy,vacuum polarization,methods of calculating electron and photon self-energy and Wick rotation are reviewed.These self- energy calculating methods include Pauli-Villars regularization and dimensional regular- iztion.Electron self-energy is calculated by using Pauli-Villars regularization method while the photon self-energy is by dimensional regularization method