Gauge-covariant vertex operators
classification
✦ hep-th
keywords
fieldgauge-covariantoperatorstheoryvertexbrstconditionconformal
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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.
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