Building string field theory around non-conformal backgrounds

Details Building string field theory around non-conformal backgrounds Building string field theory around non-conformal backgrounds

1996-06-24

arxiv.org/abs/hep-th/9606153v1

Nucl.Phys. B480 (1996) 541-572

Physics

High Energy Physics

High Energy Physics - Theory

38 pages, 4 figures, phyzzx and BoxedEPS included

Scientific paper

10.1016/S0550-3213(96)00502-0

The main limitations of string field theory arise because its present formulation requires a background representing a classical solution, a background defined by a strictly conformally invariant theory. Here we sketch a construction for a gauge-invariant string field action around non-conformal backgrounds. The construction makes no reference to any conformal theory. Its two-dimensional field-theoretic aspect is based on a generalized BRST operator satisfying a set of Weyl descent equations. Its geometric aspect uses a complex of moduli spaces of two-dimensional Riemannian manifolds having ordinary punctures, and organized by the number of special punctures which goes from zero to infinity. In this complex there is a Batalin-Vilkovisky algebra that includes naturally the operator which adds one special puncture. We obtain a classical field equation that appears to relax the condition of conformal invariance usually taken to define classical string backgrounds.

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