Quantum geometry of bosonic strings
Abstract
We develop a formalism for computing sums over random surfaces which arise in all problems containing gauge invariance (like QCD, threedimensional Ising model etc.). These sums are reduced to the exactly solvable quantum theory of the twodimensional Liouville lagrangian. At D = 26 the string dynamics is that of harmonic oscillators as was predicted earlier by dual theorists, otherwise it is described by the nonlinear integrable theory.
 Publication:

Physics Letters B
 Pub Date:
 July 1981
 DOI:
 10.1016/03702693(81)907437
 Bibcode:
 1981PhLB..103..207P