String Field Theory: A Modern Introduction
String Field Theory: A Modern Introduction
by Harold Erbin
English | 2021 | ISBN: 303065320X | 424 Pages | PDF EPUB | 22 MB
by Harold Erbin
English | 2021 | ISBN: 303065320X | 424 Pages | PDF EPUB | 22 MB
This textbook provides an introduction to string field theory (SFT). String theory is usually formulated in the worldsheet formalism, which describes a single string (first-quantization). While this approach is intuitive and could be pushed far due to the exceptional properties of two-dimensional theories, it becomes cumbersome for some questions or even fails at a more fundamental level. These motivations have led to the development of SFT, a description of string theory using the field theory formalism (second-quantization). As a field theory, SFT provides a rigorous and constructive formulation of string theory.