Do string th. calculate string decay rates?

[arivero]

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.

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?

 

[Evalesco]

I'm having a similar issue. I'm looking for a calculation that uses the vertex operator formalism to compare the decay of a fermion state into a boson plus fermion and the decay of a boson state into two fermions. I would expect to find something in the literature, given that it is a tree-level example. Has anybody out there done this or know where I can find such a calculation?

 

[Entropia]

I can assure you that there have indeed been calculations done on string decay rates using the vertex operator formalism. However, it is important to note that these calculations are highly complex and require advanced mathematical techniques, making it difficult for non-experts to fully understand and appreciate.

Furthermore, the field of superstring theory is still a developing area of research, and while there have been advancements in understanding decay rates, there is still much to be explored and understood. It is possible that the specific comparison you are looking for has not yet been thoroughly investigated.

It is also worth noting that tree-level calculations can only provide a limited understanding of string decay rates, as they do not take into account higher-order corrections and interactions. Therefore, it is important to continue researching and exploring this topic to gain a more comprehensive understanding of string decay rates.

In conclusion, while there may not be a direct comparison between fermion and boson decay rates in superstring theory, rest assured that scientists are actively working on understanding and calculating string decay rates using various approaches and techniques.