Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-12-07
Phys.Rev.D50:2779-2783,1994
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, LaTex file, DSF-T-43/93
Scientific paper
10.1103/PhysRevD.50.2779
In the framework of the compactified closed bosonic string theory with the extra spatial coordinates being circular with radius $R$, we perform both the zero-slope limit and the $R \rightarrow 0$ limit of the tree scattering amplitude of four massless scalar particles. We explicitly show that this double limit leads to amplitudes involving scalars which interact through the exchange of a scalar, spin 1 and spin 2 particle. In particular, this latter case reproduces the same result obtained in linearized quantum gravity.
Marotta Raffaele
Pezzella Franco
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