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BRST extension of a string propagator

Physics Letters B, ISSN: 0370-2693, Vol: 205, Issue: 2, Page: 289-294
1988
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Article Description

The natural closed string propagator within the Polyakov formalism is extended to include arbitrary ghost boundary data in both the coordinate and holomorphic representations. It is shown that the corresponding ghost-extended heat kernel yields directly the correct vacuum functional and one-loop effective action.

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