Séminaire de Physique ThéoriqueBuilding a realistic holographic model
Stanislav Kuperstein (IPhT, Saclay)
Thursday 25 February 2016 14:00 - Tours - Salle 1180 (Bât E2)
Holography is one of the most powerful tool for describing real world phenomena through string theory constructions. I will review several newly-developed aspects of holography and discuss some of their implications for QCD, phenomenology and hydrodynamics. I will start with the holographic description of metastable vacua of confining gauge theories based on anti-branes in geometries with opposite charge dissolved in fluxes, which are also a crucial ingredient in the construction of de Sitter vacua in string theory. I will then focus on Standard-Model-like Lagrangians derived from D3 branes inside flux compactifications I will argue that the super-trace for the fermionic and bosonic masses has to vanish in these models. In the last part of the talk I will discuss holographic renormalization, which is the key instrument that allows holography to be predictive. In particular, I will argue that the holographic correspondence can be reformulated as a generalization of Wilsonian RG flow in strongly interacting large-N QFTs. This proposal is based on a link between Einstein and Navier-Stokes equations, and is closely related to the membrane paradigm.