Looking around for this topic, I only find semiclassical calculations for high spinning strings. I would expect to find some calculation where the vertex operator formalism is used to calculate the amplitudes and then the decay rate for a superstring state decaying into two and into three superstring states, both in the massless case and in the case where the original string have some mass greater than zero.(adsbygoogle = window.adsbygoogle || []).push({});

I hoped to be able to find a comparison between the decay of a fermion state into boson plus fermion and the decay of a boson state intro two fermions.

C'mon, it is tree-level. Has nobody, in 30 years of superstring theory, calculated this kind of examples?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Do string th. calculate string decay rates?

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**