mgr Damian Chorążkiewicz

An Introduction to String Theory Part I

String theory is a branch of theoretical physics that combines quantum mechanics and general relativity altogether. In two coming lectures we will try to give you an introduction with basic notation, formalism and analysis of the classical and quantum theory. First lecture starts from analysis of relativistic point article described by a one-dimensional wordline in a spacetime and by generalization of this construction goes to so called bosonic string, which is a one-dimensional object described by a two-dimensional "wordsheet" that string sweeps out as it moves in time. We will discuss action for the string and derive equations of motion. We'll show consequences of such approach and make the background for later quantisation.