Renormalization Group Flow in BRST Invariant Open String σ-Model
نویسنده
چکیده
The renormalization group flow in the theory space of a BRST invariant string σ-model is investigated. For the open bosonic string the non-perturbative off-shell effective action and its gauge symmetry properties are determined from β-functions defined by the local Weyl anomaly. The interactions are shown to explicitly break the free theory BRST invariance generating new non-linear gauge symmetries of the type present in Witten’s string field theory. In the Feynman-Siegel gauge the σ-model is shown to generate Witten’s structure of vertex couplings.
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تاریخ انتشار 2008