The Theory of Strings (Part 2)

The Universe Before the Big Bang The Theory of Strings Hence, the observed processes can be suitably described by applying the formalism of quantum field theory following the standard model of elementary particle physics, without any reference to string theory. The same conclusion applies to the gravitational force if we limit ourselves to sufficiently flat … Read more

The Theory of Strings (Part 1)

The Universe Before the Big Bang The Theory of Strings This chapter is devoted to those readers interested in the physical foundations of pre-Big-Bang cosmology and who wish to learn the basic concepts of the theory of one-dimensional extended objects – usually dubbed string theory. In particular, we will try to outline here the quantum … Read more