The theory group studies the strong interaction at low and medium energies. The activities focus on the theoretical interpretation of the experiments at MAMI and at other accelerator facilities. Beside analytical methods like effective field theories and dispersion theory numerical simulations of Quantum Chromodynamics on the lattice are applied.

Research Topics

Hadron structure and meson production:

The basic observables for the understanding of the structure of the nucleon and its excited states are form factors, structure functions and parton distributions. The theoretical study of these observables are the basis for the interpretation of the experiments at MAMI, JLab, COMPASS as well as for future projects like PANDA.

Flavour Physics:

The calculation of weak hadronic matrix elements with lattice QCD is a central component for the determination of the elements of the CKM-matrix and CP violation in the Standard Model.

QCD at finite temperature and density:

Experimental studies made to assess where our theoretical understanding of nature has its limits and where possibly so far unobserved new worlds of matter are waiting to be discovered and understood are complemented by calculations in lattice QCD.

Group members


Prof. Dr. H. Meyer

Prof. Dr. St. Scherer

Univ.-Prof. Dr. M. Vanderhaeghen

Univ.-Prof. Dr. H. Wittig

Scientific staff:

Dr. V. Pascalutsa

Dr. L. Tiator


Jose Manuel Alarcón

Stefano Capitani

Anthony Francis

Mikhail Gorshteyn

Jeremy Green

Gregorio Herdoiza

Parikshit Junnarkar

Nikolai Kivel

Pere Masjuan

Thomas Rae

Eigo Shintani

Georg von Hippel

PhD students:

Tobias Beranek

Patricia Bickert

Felix Erben

Sandro Gorini

Vera Gülpers 

Hanno Horch

Jiayu Hua

Nadiia Krupina

Vladislaw Pauk

Pablo Sanchez Puertas

Daniel Robaina

Oleksandr Tomalak

Björn Walk

Johannes Weber

Master students:

Nils Asmusen

Franziska Hagelstein

Carsten Kleppel

Daniel Schallus


Yasemin Ünal