Any application of AdS/CFT to nucleon structure?

[petergreat]

AdS/CFT has primarily focused on quark-gluon plasma, but I notice some people are trying to apply the idea to bound states such as baryons. How much progress has been made in this field? Is it possible for AdS/CFT to shed light on problems such as parton distribution functions and proton spin structure?

 

[mitchell porter]

There are hundreds of papers on baryons in AdS/CFT but I don't know the literature. Stanley Brodsky has an AdS/QCD research program which he applies to baryons http://arxiv.org/abs/1103.1186" .

For the basics see Witten - http://arxiv.org/abs/hep-th/9805112" . This is the "planar limit" of gauge theory (in which non-planar Feynman diagrams are suppressed), which features repeatedly in AdS/CFT.

There was a paper http://arxiv.org/abs/1103.5688" , and they are quite different.

Here's Witten http://online.kitp.ucsb.edu/online/strings98/witten/" .

But for a proper answer to your question, you need someone who knows about the details of hadronic physics. Even if I searched the AdS/CFT literature, I wouldn't know which were the quality papers, because I don't know which of the many approximate models of hadronic physics are the good ones.

 

[crackjack]

Sakai-Sugimoto models of holographic QCD, for example.