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Prog. Theor. Phys. Vol. 80 No. 1 (1988) pp. 162-173
Coupling Constant Relations and Effective Lagrangian in the Type I Superstring
Norisuke Sakai and
Mitsuko Abe
Department of Physics, Tokyo Institute of Technology, Oh-okayama, Tokyo 152
(Received April 4, 1988)
Abstract:
The relation between loop expansion parameters gop for open
strings and gcl for closed strings is explicitly determined in
the type I superstring with SO(N) gauge group (N=32 for the
anomaly cancellation). This is translated to the relation between the
gauge coupling constant g YM and the gravitational coupling
constant κ in the effective field theory Lagrangian. It is
found that the compactification on a torus with arbitrary shape and
size does not affect the relation.
URL :
http://ptp.ipap.jp/link?PTP/80/162/
DOI : 10.1143/PTP.80.162
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