- 1937: John Archibald Wheeler proposes the S-matrix
- 1956: Murray Gell-Mann recognizes dispersion relations approach
- 1959: Tullio Regge proposes Regge trajectories
- 1961: Chew and Frautschi analyze mesons using Regge trajectories
- 1967: Dolen, Horn and Schmid propose DHS duality
- 1968: Gabriele Veneziano proposes the dual resonance model and Veneziano amplitude
- 1969: Paton and Chan propose the Chan-Paton rules for the Veneziano model
- 1969-1970: Nambu, Nielson and Susskind propose physical interpretation of Veneziano amplitude
- 1971: Ramond and independently Schwarz and Neveu propose spinning strings
- 1974: Schwarz, Scherk and independently Yoneya discover connection between boson string vibration and the graviton
- 1977: Gliozzi, Scherk and Olive propose tachyon-free unitary free string theories
- 1984: Green and Schwarz discover anomaly cancellation in type I string theory and Green-Schwarz mechanism
- 1985: Gross, Harvey, Martinec and Rohm propose heterotic stings
- 1985: Candelas, Horowitz, Strominger and Witten discover connection between N = 1 supersymmetry and the Calabi-Yau manifold
- 1987: Bergshoeff, Sezgin and Townsend propose supermembranes in eleven dimensions
- 1995: Edward Witten proposes M-theory
- 1995: Joseph Polchinski proposes D-branes
- 1997-1998: Juan Maldacena proposes AdS/CFT correspondence between N = 4 supersymmetric Yang Mills theory and type IIB string theory
- 2003: Michael R. Douglas proposes the string theory landscape
- 2003: Kachru, Kalloch, Linde and Trivedi propose KKLT mechanism for vacuum stabilization
Sources
Wikipedia: History of string theory, M-Theory
