### Particles, Astrophysics, and Nuclei Physics Seminar

Monday, February 8, 2010
2:00pm – 3:30pm

Storrs Campus
Gant Science Complex P-121

Professor Eugene Levin from Tel Aviv University, will present the following talk, "New Mechanism for Multi-particle Production in N=4 Yang-Mills Theory.” N=4 Super-symmetric Yang-Mills theory (N=4 SYM) in the strong coupling regime has been successfully applied (through the AdS/CFT correspondence) to the description of strongly coupled plasma which is a multiparticle state. Yet, the high-energy scattering in the strong coupling limit of N=4 SYM is purely elastic, so this multiparticle final state can never be produced: this is because in this limit the theory is dual to weak supergravity, and the dominant interaction is the elastic graviton exchange. Here we propose a resolution of this dilemma by considering the contribution of D-instantons in $AdS_5$ bulk space to the scattering amplitude. We argue that D-instantons coupled to dilatons and axions are responsible for multiparticle production in strongly coupled N=4 SYM, and the corresponding cross section increases with energy.

Contact:

Dawn Rawlinson dawn.rawlinson@uconn.edu 486-4916

UConn Physics Department

Physics Department (primary), UConn Master Calendar