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In the context of the bosonic closed string theory, by using the operatorial formalism, we give a simple expression of the off-shell amplitude with an arbitrary number of external massless states inserted on the Klein bottle.

Original publication

DOI

10.1142/S0217732398003028

Type

Journal article

Journal

Modern Physics Letters A

Publication Date

20/11/1998

Volume

13

Pages

2845 - 2854