Geodesic
Virasoro amplitude from the $S^N{\mathbf R}^{24}$-orbifold sigma model
Teoretičeskaâ i matematičeskaâ fizika, Tome 114 (1998) no. 1, pp. 56-86 
G. E. Arutyunov; S. A. Frolov. Virasoro amplitude from the $S^N{\mathbf R}^{24}$-orbifold sigma model. Teoretičeskaâ i matematičeskaâ fizika, Tome 114 (1998) no. 1, pp. 56-86. http://geodesic.mathdoc.fr/item/TMF_1998_114_1_a1/
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     author = {G. E. Arutyunov and S. A. Frolov},
     title = {Virasoro amplitude from the $S^N{\mathbf R}^{24}$-orbifold sigma model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {56--86},
     year = {1998},
     volume = {114},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1998_114_1_a1/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

The four-tachyon scattering amplitude is derived from the $S^N{\mathbf R}^{24}$-orbifold sigma model in the large $N$ limit. The closed string interaction is described by a vertex that is a bosonic analog of the supersymmetric vertex recently proposed by Dijkgraaf, H. Verlinde, and E. Verlinde

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