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

Tsuguhiko Asakawa | Zendy; Taichiro Kugo | Zendy; Tomohiko Takahashi | Zendy

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

Author(s) -

Tsuguhiko Asakawa,

Taichiro Kugo,

Tomohiko Takahashi

Publication year - 1999

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.102.427

Subject(s) - physics , tachyon , coupling constant , amplitude , string (physics) , string field theory , quantum electrodynamics , mathematical physics , field theory (psychology) , gauge theory , loop (graph theory) , string theory , field (mathematics) , planar , coupling (piping) , relationship between string theory and quantum field theory , quantum mechanics , combinatorics , pure mathematics , quantum gravity , mathematics , mechanical engineering , computer graphics (images) , engineering , quantum , computer science

We calculate one-loop 2-point tachyon amplitudes in unoriented open-closedstring field theory, and determine all the coupling constants of theinteraction vertices in the theory. It is shown that the planar, nonplanar andnonorientable amplitudes are all reproduced correctly, and nontrivialconsistencies between the determined coupling constants are observed. Thenecessity for the gauge group to be SO(2^{13}=8192) is also reconfirmed.Comment: 40 pages, 17 eps figures, LaTeX with PTPTeX.sty, style file replaced once again

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