English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  DetailsSummary

Released
Journal Article

Soft behavior of a closed massless state in superstring and universality in the soft behavior of the dilaton

MPS-Authors
/persons/resource/persons201815

Mojaza,  Matin
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

1610.03481.pdf
(Preprint), 404KB

JHEP12(2016)020.pdf
(Publisher version), 531KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Di Vecchia, P., Marotta, R., & Mojaza, M. (2016). Soft behavior of a closed massless state in superstring and universality in the soft behavior of the dilaton. Journal of high energy physics: JHEP, 2016(12): 020. doi:10.1007/JHEP12(2016)020.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-399C-1
Abstract
We consider the tree-level scattering amplitudes in the NS-NS (Neveu-Schwarz) massless sector of closed superstrings in the case where one external state becomes soft. We compute the amplitudes generically for any number of dimensions and any number and kind of the massless closed states through the subsubleading order in the soft expansion. We show that, when the soft state is a graviton or a dilaton, the full result can be expressed as a soft theorem factorizing the amplitude in a soft and a hard part. This behavior is similar to what has previously been observed in field theory and in the bosonic string. Differently from the bosonic string, the supersymmetric soft theorem for the graviton has no string corrections at subsubleading order. The dilaton soft theorem, on the other hand, is found to be universally free of string corrections in any string theory.