Majumdar, Dr. MahbubUpoma, Ipshita Bonhi2016-08-162016-08-162016B. Science2016ID 11311002http://hdl.handle.net/10361/6158This internship report is submitted in a partial fulfillment of the requirements for the degree of Bachelor of Science in Physics, 2016Cataloged from PDF version of internship report.Includes bibliographical references (page 82-83).This thesis discusses the general role of symmetry in high-energy physics. It concentrates on the role of fermionic symmetry generators, which generate the symmetry known as supersymmetry. An extensive discussion of spinors in D-dimensions is given and the necessity of spinors is explained from a group theoretical point of view. The supersymmetric transformation rules of the elds are explained and Lagrangians for simple theories are explained. We generalize to SU(n) gauge theories and give a discussion of con nement in supersymmetric gauge theories. We also apply supersymmetry in the Starobinsky model of cosmological in ation by constructing a NSWZ model equivalent to the R2 Starobinsky model. A parametrically quadratic function, x(t) providing favourable conditions for in ation is found for eld, x in terms of a string modulus, t.83 pagesenBRAC University Internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Supersymmetric gauge theoryEnergy physicsCosmic inflationThesis