- Access by Xinjiang University
Comment on the use of doubled surfaces
Phys. Rev. D 39, 1802 – Published 15 March, 1989
DOI: https://doi.org/10.1103/PhysRevD.39.1802
Abstract
I comment on a recent paper of Nagao and in particular give a proof that a special type of homology basis used by Nagao and previous workers is not admitted by the complex double of any unorientable surface with a boundary. However, their final results are not invalidated by the modifications required by the use of a less restricted class of homology bases.
Original Article
Involution-dependent constants and the cancellation of divergences in the one-loop open-string amplitude
Phys. Rev. D 38, 569 (1988)
References (7)
- G. Nagao, Phys. Rev. D 38, 569 (1988).
- S. K. Blau, S. Della Pietra, S. Carlip, M. Clements and V. Della Pietra, Nucl. Phys. B301, 285 (1988).
- G. Nagao, Mod. Phys. Lett. A (to be published).
- B. Heltai, Proc. Am. Math. Soc. 100, 675 (1987).
- C. Varughese and W. I. Weisberger, Phys. Rev. D 37, 981 (1988).
- G. P. Collins and W. I. Weisberger (in preparation).
- P. J. Giblin, Graphs, Surfaces and Homology, 2nd ed. (Chapman and Hall, London and New York, 1981).