Hjalte Axel Frellesvig

Hjalte Axel Frellesvig is a Postdoctoral Researcher at the Niels Bohr Institute, University of Copenhagen, with additional affiliations as an External Researcher and Guest Researcher at the Niels Bohr International Academy. His research focuses on theoretical high energy physics, astroparticle physics, and gravitational physics.

Dr. Frellesvig's research interests span several interconnected areas of theoretical physics:

• Theoretical High Energy Physics: Specializing in advanced computational methods for calculating scattering amplitudes and Feynman integrals
• Gravitational Physics: Working on the interface between quantum field theory and general relativity, particularly in the context of gravitational waves
• Mathematical Physics: Applying sophisticated mathematical techniques including Calabi-Yau geometry, intersection theory, and cohomology to physical problems
• Particle Physics Phenomenology: Contributing to precision calculations relevant for LHC experiments

His recent work demonstrates a strong trend toward unifying mathematical structures in quantum field theory with gravitational physics, particularly through the application of Calabi-Yau geometry to post-Minkowskian expansions. Frellesvig has made significant contributions to developing the loop-by-loop Baikov representation and ε-factorized forms of Feynman integrals, which have important applications in both particle physics and gravitational wave astronomy.

Frellesvig has established productive collaborations with researchers across multiple institutions, as evidenced by his co-authorship with scientists from various international organizations. His work bridges theoretical developments with potential observational consequences in astroparticle physics.