Particle-hole symmetries in condensed matter
- Date
- Jan 20, 2025
- Time
- 4:30 PM - 5:30 PM
- Speaker
- Prof. Martin Zirnbauer
- Affiliation
- University of Cologne
- Series
- MPI-PKS Kolloquium
- Language
- en
- Main Topic
- Physik
- Other Topics
- Physik
- Description
- Non-relativistic condensed matter breaks the charge conjugation symmetry, C, of relativistic quantum fields. Nonetheless, for half-filled bands a close analog may emerge, namely particle-hole symmetry, K. The two symmetry operations C and K are similar in that they transform any excitation of energy E and charge Q to another excitation with the same energy E but the opposite charge -Q; they differ in that charge conjugation is a unitary operation, whereas particle-hole symmetries are anti-unitary. After reviewing the notion of symmetries in quantum mechanics and some background material from many-body theory, this colloquium talk highlights a few examples of particle-hole symmetries in condensed matter, foremost the spectacular case of the half-filled lowest Landau level.
Last modified: Jan 20, 2025, 7:38:05 AM
Location
Max-Planck-Institut für Physik komplexer SystemeNöthnitzer Straße3801187Dresden
- Phone
- + 49 (0)351 871 0
- MPI-PKS
- Homepage
- http://www.mpipks-dresden.mpg.de
Organizer
Max-Planck-Institut für Physik komplexer SystemeNöthnitzer Straße3801187Dresden
- Phone
- + 49 (0)351 871 0
- MPI-PKS
- Homepage
- http://www.mpipks-dresden.mpg.de
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