Gauge-covariant vertex operators
arXiv:hep-th/0310070 · doi:10.1016/j.nuclphysb.2004.02.003
Abstract
We derive Yang-Mills vertex operators for (super)string theory whose BRST invariance requires only the free gauge-covariant field equation and no gauge condition. Standard conformal field theory methods yield the three-point vertices directly in gauge-invariant form.
10 pages, no figures
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- On the gauge chosen by the bosonic open string