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String theories and Hirota's bilinear difference equation

Journal Article · · Phys. Rev. Lett.; (United States)
The ratio of an N-point p-loop string amplitude to the N-point tree amplitude is shown to solve Hirota's bilinear difference equation which is satisfied by all solutions to the Kadomtsev-Petviashvili hierarchy. Evolution of solutions is determined by Koba-Nielsen variables and external momenta. Fay's trisecant formula emerges as a result.
Research Organization:
Department of Physics, Tokyo Metropolitan University, Setagaya-Ku, Tokyo 158, Japan
OSTI ID:
6084063
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:16; ISSN PRLTA
Country of Publication:
United States
Language:
English

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