Nambu–Goto action S = –T ∫ d²σ √(–det h_ab) with induced worldsheet metric h_ab = ∂_aX^μ∂_bX_μ (Polyakov form introduces auxiliary worldsheet metric). Quantisation consistent only in D=26.
Bosonic string action
Related concepts
- Einstein field equations
- Schrödinger equation
- Physics beyond the Standard Model
- Superstring theory
- M-theory
- Compactification
- Calabi–Yau manifold
- AdS/CFT correspondence
- T-duality
- String landscape
- Ashtekar variables
- Ashtekar variables
- Veneziano amplitude (1968)
- Scherk-Schwarz (1974)
- GS anomaly (Green-Schwarz 1984)
- M-theory (Witten 1995)