# Aachen 2019 – wissenschaftliches Programm

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# T: Fachverband Teilchenphysik

## T 98: Hauptvorträge VII

### T 98.2: Hauptvortrag

### Freitag, 29. März 2019, 09:45–10:30, H01

**Gauge/gravity duality and particle physics: New approaches to strongly coupled sectors** — •Johanna Erdmenger — Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg

The AdS/CFT correspondence, which may be generalized to gauge/gravity dualities with running couplings, provides an important new map between quantum field theories (QFT) without gravity on the one hand, and gravity theories on the other. This is of intrinsic interest in view of a unified theory of fundamental interactions. In addition, gauge/gravity duality provides a new approach to strongly coupled QFT by mapping them to classical gravity theories. This has been used as a dual approach to confinement and chiral symmetry breaking, including the evaluation of meson and glueball masses and decay constants that compare favourably to lattice gauge theory results. Gauge/gravity duality has also proved very useful in the study of QCD at finite temperature and density. Currently, gauge/gravity duality is used as a road to new physics in the context of composite Higgs models, where the Higgs boson is viewed as an admixture of a pseudo-Goldstone boson and a condensate. Gauge/gravity duality allows to model the underlying strongly coupled gauge dynamics. The spectrum is determined by solving the equations of motion in the dual gravity theory. The talk will provide an overview over the main concepts of gauge/gravity duality and its use for beyond the standard model physics.