For 10 points, name this theory of everything in which all matter is composed of namesake tiny loops of energy.
The landscape described by this formalism consists of roughly "ten to the five-hundred" metastable vacua. The spacetime geometry described by it incorporates worldsheets bound to D-branes, as well as compactified spaces. Criticism of it often focuses on the large number of free parameters in the theory, making it practically untestable; however, this formalism also provides a basis for the anthropic principle. In the mid-90s, Ed Witten revolutionized this field when he united all types of them into M-theory, which describes an 11-dimensional universe. For 10 points, name this theory of everything in which all matter is composed of namesake tiny loops of energy.
The landscape described by this formalism consists of roughly "ten to the five-hundred" metastable vacua.
superstring theory