String field theory

String field theory is an approach to understanding the fundamental nature of the universe by describing how tiny, vibrating strings—much smaller than atoms—interact and combine to form particles and forces. Instead of viewing particles as point-like, it considers them as different modes of vibration of these strings. The theory uses a mathematical framework similar to how fields describe forces like electromagnetism, but it applies to the entire set of possible string configurations. This helps scientists seek a unified description of all fundamental interactions, including gravity, within a consistent, all-encompassing quantum theory.