On String Field Theory and Effective Actions

Details On String Field Theory and Effective Actions On String Field Theory and Effective Actions

1992-06-04

arxiv.org/abs/hep-th/9206023v1

Nucl.Phys. B391 (1993) 229-256

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, IASSNS-HEP-92/33

Scientific paper

10.1016/0550-3213(93)90148-I

A truncation of string field theory is compared with the duality invariant effective action of $D=4, N=4$ heterotic strings to cubic order. The three string vertex must satisfy a set of compatibility conditions. Any cyclic three string vertex is compatible with the $D=4, N=4$ effective field theory. The effective actions may be useful in understanding the non--polynomial structure and the underlying symmetry of covariant closed string field theory, and in addressing issues of background independence. We also discuss the effective action and string field theory of the $N=2$ string.

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