@article{180933f1a604499fa8653db322abc5f8,

title = "On two-dimensional conformal invariance and the field theory of strings",

abstract = "An algebraic approach to string field theory is proposed. The string field is written as the quantum stress-energy tensor of two-dimensional nonlinear field theory. The equation of motion is the condition of two-dimensional conformal invariance, expressed as a quadratic operator product relation. The gauge structure of the linearized equation of motion is analyzed. Some of the remaining problems are discussed.",

author = "D. Friedan",

note = "Funding Information: where A -1 is a distance scale on the plane. The RG equation is covariant under spaeetime reparametriza-tions, to all orders in the perturbative expansion. The crucial point is that the RG fixed point equation in a two-dimensional quantum field theory (2D QFT) gives a generally covariant equation of motion for gravity, In the long distance limit on spacetime, (guu) -1 {"}-} 0, the fixed points become the solutions of Einstein's equation Ruv = 0. For a string theory to be a complete theory of This work was supported in part by US Department of Energy grant DE-FGO2-84ER-45144a nd the Alfred P. Sloan Foundation.",

year = "1985",

month = nov,

day = "7",

doi = "10.1016/0370-2693(85)91069-X",

language = "English (US)",

volume = "162",

pages = "102--108",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-3",

}