Research Council backup mandate Alexandros Spyridon Arvanitakis: Higher structures and dualities in quantum field theory from string theory

Project Details


String theory is regarded as the leading candidate for a "theory of
everything": a description of matter, gravity and spacetime at the very
smallest length scales, where quantum effects become important for
physics. This confidence in the theory derives from its remarkable
internal consistency that is enforced by its "higher structures":
roughly, generalisations of familiar mathematical ideas of proven
relevance for physics --- such as the idea of symmetry --- that can
accommodate the extended nature of fundamental strings as
opposed to particles. In recent work I discovered the universal string-theoretic higher structure inside our theories of fundamental particles, which has
been hiding in plain sight since the invention of quantum field theory
in the last century. This opens an entirely new window on particle
physics. In this project I propose to use this insight as an
organisational principle for the complexities of particle scattering,
which will yield new efficient ways to do calculations in particle
physics and beyond. This higher structure also has implications for what is called "duality": the hidden physical equivalence of two apparently distinct physical scenarios. Another goal of this project is to understand the interplay
between duality, higher structures, and the geometry of spacetime,
aiming to connect the latest advances in stringy geometry with realworld
Effective start/end date1/10/2030/09/21

Flemish discipline codes

  • Theoretical particle physics
  • General relativity and gravitation
  • Field theory and string theory


  • string theory
  • duality
  • quantum field theory