Abstract
We point out that the quasiparticle spectrum of the Landau Fermi liquid theory has an extra Z2 symmetry, local in momentum space, which is not generic to the Hamiltonian with interactions. Thus the Fermi liquid is in this sense a (quantum) zero-temperature critical point.
Original language | English (US) |
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Pages (from-to) | 425-428 |
Number of pages | 4 |
Journal | Journal of Statistical Physics |
Volume | 103 |
Issue number | 3-4 |
DOIs | |
State | Published - May 2001 |
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Mathematical Physics
Keywords
- Fermi liquid theory
- Interacting Fermi systems
- Symmetries of Fermi systems