Department Mathematik



Lecture course: Mathematical quantum mechanics

Tue, 12 – 14 in B 005, Thu 12 – 14 in B 006

Problem solving classes: Dr. Jean-Claude Cuenin

Problem sheets and further information


  • 12.01.18   The proof of claim (ii) in the proof of Perry's estimate (Theorem 3.18) has been made more transparent in the script and its adaptation to the situation in Remark 3.19 is worked out in more details there.
  • 17.10.17   Prerequisites on measures and integration, Banach and Hilbert spaces and bounded operators are summarised in this handout.

The course introduces the basic elements of mathematical quantum mechanics and the necessary analytical tools. Topics to be covered include: observables as self-adjoint operators, spectral theorem for self-adjoint operators, relation between spectral types and dynamics, elements of scattering theory, many-particle systems.

Basics of functional analysis and quantum mechanics are helpful.

Master students.

  • M. Reed, B. Simon, Methods in modern mathematical physics, vol. I – IV, Academic Press, San Diego
  • G. Teschl, Mathematical methods in quantum mechanics, 2nd ed., Amer. Math. Soc., Providence, RI, 2009
  • W. Thirring, Quantum mathematical physics, Springer, Wien, 2002
  • J. Weidmann, Linear operators in Hilbert spaces, Springer, New York, 1976
    [There exists an updated and largely expanded German edition in two volumes]
  • for a thorough physics background: A. Galindo, P. Pascual, Quantum Mechanics I and II, 2nd ed., Springer, Berlin, 1989

0.  Introduction
     0.1.  Why mathematical quantum mechanics?
     0.2.  Comparison classical mechanics and quantum mechanics
1.  Unbounded operators on Hilbert space
     1.1.  Closed operators and adjoints
     1.2.  The spectral theorem for self-adjoint operators
     1.3.  Decompositions of the spectrum
2.  Spectral types and quantum dynamics
     Excursus: Compact and trace-class operators
     Excursus: Operator perturbations
3.  Scattering theory
     3.1.  Wave operators: existence
     3.2.  Incoming and outgoing states
     3.3.  Wave operators: asymptotic completeness

(I am grateful if you report misprints and errors in order to improve future versions.)

Notes of Robert Helling
Quantum states