Introduction to string field theory

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W. Siegel (C.N. Yang Institute for Theoretical Physics) This is my paper · ORCID

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General Lagrangian formulations for mixed-antisymmetric tensor fields on flat backgrounds
hep-th 2026-06 unverdicted novelty 6.5 of 10

Lagrangian formulations for mixed-antisymmetric higher-spin fields with k-column Young tableaux are constructed via complete and incomplete BRST operators after converting constraints using Verma modules and Howe duality.
Gauss law constraint in A-theory branes
hep-th 2026-03 conditional novelty 6.0 of 10

In D=3 and D=4 A-theory, all consistent solutions of the Gauss-law dimensional-reduction condition are strings, and the brane Virasoro algebra reduces to the ordinary string Virasoro algebra.
Pair production of massive charged vector bosons from the worldline
hep-th 2025-07 conditional novelty 5.0 of 10

A worldline path integral for a massive charged spin-1 particle reproduces the known one-loop Euler-Heisenberg-type Lagrangian and Schwinger pair production rate for vector bosons.