Gauge Invariant 1PI Effective Action for Superstring Field Theory
arXiv:1411.7478
Abstract
We construct gauge invariant 1PI effective action for the NS sector of type II and heterotic string field theory. By construction, zero eigenvalues of the kinetic operator of this action determine the renormalized physical masses, and tree level amplitudes computed from this action (after gauge fixing) give the loop corrected S-matrix elements. Using this formalism we can give a simple proof of the result that the renormalized physical masses do not depend on the choice of local coordinate system and locations of picture changing operators used in defining the off-shell amplitude. We also eliminate the need for an infrared regulator in dealing with tadpoles of massless fields.
arXiv commentLaTeX file, 39 pages, 1 figure; v2: minor additions
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- Closed Superstring Field Theory and its Applications
- BV Master Action for Heterotic and Type II String Field Theories
- Off-shell Amplitudes in Superstring Theory
- Ramond Equations of Motion in Superstring Field Theory
- Multiloop Amplitudes of Light-cone Gauge Bosonic String Field Theory in Noncritical Dimensions
- Open string stub as an auxiliary string field
- Fermion scattering amplitudes from gauge-invariant actions for open superstring field theory
- Multiloop Amplitudes of Light-cone Gauge String Field Theory for Type II Superstrings