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- W1508425967 abstract "Given a solution ψcl of the classical equations of motion in either closed or open string field theory based on a certain conformal field theory (CFT) we may define a shifted string field ψ=ψ − ψcl. The string field theory action expressed interms of the shifted field is then given by S(ψ) = S(ψ + ψcl − S(ψcl), where S(ψ) is the original action of the string field theory. In S(ψ) the coefficient QB of the quadratic term in ψ has the property that (QB)2 = 0. It was shown in a previous paper that in the limit when the background ψcl is weak, QB can be identified with the BRST charge of a new conformal field theory (CFT″), which is obtained by perturbing the orginal conformal field theory (CTF) by a marginal operator. In this paper we compute various on-shell S-matrix elements using the action S(ψ) and show that they are identical to the on-shell S-matrix in the string based on the new conformal field theory (CTF″). This in turn shows that S(ψ) describes string theory formulated around the background of this new conformal field theory." @default.
- W1508425967 created "2016-06-24" @default.
- W1508425967 creator A5006432646 @default.
- W1508425967 date "1990-12-01" @default.
- W1508425967 modified "2023-09-27" @default.
- W1508425967 title "On the background independence of string field theory" @default.
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- W1508425967 doi "https://doi.org/10.1016/0550-3213(90)90560-z" @default.
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