[NT/RBRC Seminar] Timofey Solomko, Sakai-Sugimoto Model in an Off-Shell: Chiral Lagrangian to All Orders

Friday Jun 13, 2025, 11:00 AM → 1:00 PM US/Eastern

In this talk we will discuss our recent study of the Sakai-Sugimoto holographic model in the off-shell formalism. This model is famous for implementing the approximate chiral symmetry of QCD and reproducing the Chiral Lagrangian in a top-down holographic approach. Off-shell holography is a formalism most suitable for derivation of boundary effective actions. Thus derived effective action is very rich in physics: it contains an U(N_f) multiplet of massless pseudoscalars interacting with towers of massive spin-1 mesons. In contrast to the previous studies, our effective action is non-local. The original Chiral Lagrangian is recovered as its local expansion in small pi-meson momenta (derivative expansion).