ST1 - Branes and Instantons in String Theory |
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Speaker |
Guerrieri, Andrea |
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Coauthors |
Bianchi, Massimo |
| Talk Title |
On the soft limit of string amplitudes |
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Abstract |
We discuss the soft behaviour of open string amplitudes with gluons and massive states in any dimension. Notwithstanding non-minimal couplings of massive higher spin states to gluons, relying on OPE and factorization, we argue that the leading and sub-leading terms are universal and identical to the ones in Yang-Mills theories. We also check the validity of a recently proposed formula relating open superstring amplitudes for mass-less states at tree-level to SYM amplitudes, by factorisation on two-particle massive poles. Finally we analyse the holomorphic soft limit of superstring amplitudes with one massive insertion. |
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