The Infinite Dimensions of Quantum Physics (IMPRS UFAST focus course)

IMPRS UFAST focus course

  • Start: May 2, 2023 09:30 AM (Local Time Germany)
  • End: May 5, 2023 12:30 PM
  • Speaker: Michael Ruggenthaler
  • Location: CFEL (Bldg. 99)
  • Room: Seminar Room O2.068
The Infinite Dimensions of Quantum Physics (IMPRS UFAST focus course)


It is common practice to equate quantum physics with the manipulation of matrices and quantum states with their eigenvectors However, the basic tenets of quantum physics make the use of infinite dimensional vector spaces and unbounded operators necessary, which diverge in their properties significantly from matrices While many of these differences can become important when developing new theoretical methods, they are commonly not covered in the standard courses on quantum physics.
In this focus course we will discuss the most important of these differences and their consequences in the context of quantum mechanics and non-relativistic quantum electrodynamics.


- Finite vs infinite dimensional vector spaces (why do we need infinite dimensions)
- Bounded vs unbounded operators (why do we need unbounded operators)
- Solutions of time dependent Schroedinger equations (when are more general solutions necessary)
- Existence of ground states and stability

Tuesday 2nd Friday 5th May 2023 09:30 h 12:30 h, SR O2.068

Poster (pdf)

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