PhD seminar

  • Date:
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1
  • Lecturer: Elias Riedel Gårding
  • Contact person: Stephan Wagner
  • Seminarium

Title: Quantum field theories as cobordism functors

The seminar will take place on Zoom. Passcode: 478793 


I will give a very short introduction to quantum mechanics and quantum field theory (QFT), and explain how a QFT can be seen as a functor from a category of cobordisms to a category of vector spaces. This perspective shows the relation between Hilbert space, path integral and axiomatic formulations of QFT. The emphasis will be on the physical meaning of the mathematical formalism, which will provide some context for Mateusz's talk last October. I will discuss the particular properties of topological QFTs (TQFTs) and, time permitting, show how the discussion plays out in a concrete example.