6 lectures (12 hours in total), course beginning on April 7 2011

We shall pass through the motivation for extending the SU(3)xSU(2)xU(1) gauge symmetry of the Standard model of particle physics to larger simple or semi-simple gauge groups, leading to two basic classes of unified frameworks - the SU(5) GUTs and the left-right symmetric models involving the Pati-Salam and SO(10) scenarios. We shall discuss some of the consequences of such "unified" theories, e.g., the weak mixing angle determination, baryon number non-conservation and/or correlations between Yukawa couplings at a high scale and their implications for neutrino masses and lepton mixing. We shall also discuss the hierarchy problem and the role of supersymmetry in Grand unifications.

P.Langacker, Phys.Repts. 72 (1981)
R.Slansky, Phys.Repts. 79 (1981)
D.Bailin, A.Love, SUSY gauge field theories and string theory, ISBN 0750-302674
G.G.Ross, Grand Unified Theories, 1984, ISBN 0805-369678
R.N.Mohapatra, Unification & Supersymmetry, 1986/92, ISBN 0378-955348