Dr. Christoph Nega
Quantum Gravity and Unified Theories
Location Potsdam
Main Focus
My research interests fall into two main areas. First, I have a strong interest in the formal concepts and mathematical frameworks that underlie Feynman integrals and scattering amplitudes. In this realm, I am particularly drawn to geometric approaches, especially the relationship between Calabi-Yau manifolds and Feynman integrals. On the other hand, I am also eager to apply these mathematical concepts to calculate physically significant scattering processes. These processes stem from quantum field theory, in which one computes the scattering amplitudes of fundamental particles such as electrons, quarks, gluons, and others. Interestingly, these techniques based on Feynman integrals can also be used to analyze black hole scattering in general relativity. In one of my major publications, we conducted one of the most precise computations of the scattering between two black holes, which indeed involved Calabi-Yau periods.
Publications
You can find my publications on Inspire.
Curriculum Vitae
I completed both my Bachelor's and Master's studies at the University of Bonn. During my PhD, also done at the University of Bonn under the supervision of Prof. Dr. Albrecht Klemm, I shifted my focus from string theory to scattering amplitudes and Feynman integrals. In my PhD thesis titled "Calabi-Yau Manifolds and Feynman Integral Computations: The Family of Banana Feynman Graphs," I established a connection between Calabi-Yau manifolds, which originally arise in the context of string compactifications, and the study of Feynman integrals. I explored how geometric techniques can be applied to solve these integrals. In 2022, I left the University of Bonn to begin my first postdoctoral position at the Technical University of Munich, working in the group of Prof. Dr. Lorenzo Tancredi. There, we delved deeper into the connection between Calabi-Yau manifolds and scattering amplitudes. Since 2025, I have been a postdoc in the Quantum Gravity division at the Max Planck Institute for Gravitational Physics (AEI) in Potsdam, where I focus on the mathematics of Feynman integrals and scattering amplitudes.