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Two- and three-loop amplitudes in the bosonic string theory

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
177
Identifiers
DOI: 10.1016/0370-2693(86)90761-6

Abstract

Abstract Explicit formulae are obtained for two- and three-loop vacuum amplitudes in the theory of closed oriented bosonic strings at d=26 n terms of the theta constants, with the moduli space being parametrized by period matrices.

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