Understanding fields using strings: A reviewSUNIL MUKHITata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India Abstract .In addition to being a prime candidate for a fundamental unified theory of all interactions in nature, string theory provides a natural setting to understand gauge field theories. This is linked to the concept of `D-branes': extended, solitonic excitations of string theory which can be studied using techniques of string theory and which support gauge fields localized along their world-volumes. It follows that the techniques of string theory can be very useful even for those particle physicists who are not specifically interested in unification and/or quantum gravity. In this talk I attempt to review how strings help us to understand fields. The discussion is restricted to 3+1 spacetime dimensions. Keywords: Fields; strings; supersymmetry. Pacs No.: 2.0 |