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Prog. Theor. Phys. Vol. 102 No. 2 (1999) pp. 427-466

[ Full Text PDF : FREE ACCESS (542K) ]

One-Loop Tachyon Amplitude in Unoriented Open-Closed String Field Theory

Tsuguhiko Asakawa,1,*) Taichiro Kugo 1,**) and Tomohiko Takahashi 2,***)

1Department of Physics, Kyoto University, Kyoto 606-8502, Japan
2Department of Physics, University of Tokyo, Tokyo 113-0033, Japan

(Received May 6, 1999)

Abstract:

We calculate one-loop 2-point tachyon amplitudes in unoriented open-closed string field theory, and determine all the coupling constants of the interaction vertices in the theory. It is shown that the planar, nonplanar and nonorientable amplitudes are all reproduced correctly, and nontrivial consistencies among the determined coupling constants are observed. The necessity for the gauge group to be SO(213 = 8192) is also reconfirmed.


URL : http://ptp.ipap.jp/link?PTP/102/427/
DOI : 10.1143/PTP.102.427


*)JSPS Research Fellow. E-mail: asakawa@gauge.scphys.kyoto-u.ac.jp
**)E-mail: kugo@gauge.scphys.kyoto-u.ac.jp
***) JSPS Research Fellow. E-mail: tomo@hep-th.phys.s.u-tokyo.ac.jp

[ Full Text PDF : FREE ACCESS (542K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 104 No. 2 (2000) pp. 459-476 :
    Open String Field Theory on Noncommutative Space
    Teruhiko Kawano and Tomohiko Takahashi
  2. Progress of Theoretical Physics Vol. 104 No. 6 (2000) pp. 1267-1287 :
    Open-Closed String Field Theory in a Background B Field
    Teruhiko Kawano and Tomohiko Takahashi

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