Abstract:
We compute the BRST cohomology of the holomorphic part of the N= 1 string at arbitrary ghost and picture number. We confirm the expectation that the relative cohomology at non-zero momentum consists of a single massless state in each picture. The absolute cohomology is obtained by an independent method based on homological algebra. For vanishing momentum, the relative and absolute cohomologies both display a picture dependence – a phenomenon discovered recently also in the relative Ramond sector of N= 1 strings by Berkovits and Zwiebach [1].
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Received: 5 January 1998 / Accepted: 16 November 1998
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Jünemann, K., Lechtenfeld, O. Chiral BRST Cohomology of N= 2 Strings at Arbitrary Ghost and Picture Number. Comm Math Phys 203, 53–69 (1999). https://doi.org/10.1007/s002200050605
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DOI: https://doi.org/10.1007/s002200050605