Non-Fermi Liquids as Ersatz Fermi Liquids: General Constraints on Compressible Metals
A system with charge conservation and lattice translation symmetry has a well-defined filling ν, which is a real number representing the average charge per unit cell. We show that if ν is fractional (i.e., not an integer), this imposes very strong constraints on the low-energy theory of the system a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-04-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.11.021005 |