| Autor: |
Monkman, K., Sirker, J. |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 107, 125108 (2023) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.107.125108 |
| Popis: |
For a many-body system of arbitrary dimension, we consider fermionic ground states of non-interacting Hamiltonians invariant under a $C_2$ cyclic group. The absolute difference $\Delta$ between the number of occupied symmetric and anti-symmetric single-particle states is an adiabatic invariant. We prove lower bounds on the configurational and the number entropy based on this invariant. In band insulators, the topological invariant $\Delta$ and the entropy bounds can be directly determined from high symmetry points in the Brillouin zone. |
| Databáze: |
arXiv |
| Externí odkaz: |
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