Persistence of exponential decay and spectral gaps for interacting fermions
We consider systems of weakly interacting fermions on a lattice. The corresponding free fermionic system is assumed to have a ground state separated by a gap from the rest of the spectrum. We prove that, if both the interaction and the free Hamiltonian are sums of sufficiently rapidly decaying terms...
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| Main Authors: | , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2019
|
| In: |
Communications in mathematical physics
Year: 2018, Volume: 365, Issue: 1, Pages: 773-796 |
| ISSN: | 1432-0916 |
| DOI: | 10.1007/s00220-018-3211-z |
| Online Access: | Verlag, Volltext: https://doi.org/10.1007/s00220-018-3211-z
|
| Author Notes: | Wojciech De Roeck, Manfred Salmhofer |
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Persistence of exponential decay and spectral gaps for interacting fermions
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