The authors make these subjects accessible through carefully worked examples illustrating the technical aspects of the subject, and intuitive explanations of what is going on behind the mathematics. After presenting the basics of quantum electrodynamics, the authors discuss the theory of renormalization and its relation to statistical mechanics, and introduce the renormalization group. This discussion sets the stage for a discussion of the physical principles that underlie the fundamental interactions of elementary particle physics and their description by gauge field theories.

    Stimulating, illuminating, and always surprising, The Big Questions challenges readers to re-evaluate their most fundamental beliefs and reveals the relationship between the loftiest philosophical quests and our everyday lives.

    Castaneda has come to be seen as an anthropologist of the soul, showing us that the inner world has its own inaccessible mountains, forbidding deserts and awesomely beautiful dangers which we are all called to confront. This audio program presents the first two and the best known titles in the Don Juan series, the Teachings of Don Juan and A Separate Reality. Listen -- and marvel -- as you are drawn into a breathtaking world of magical reality and ultimate truth from one of the most influential writers of our time.