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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Bibliographic Details
Main Authors: De Roeck, Wojciech (Author) , Salmhofer, Manfred (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: 2017
In: Arxiv

Online Access:Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1712.00977
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Author Notes:Wojciech de Roeck & M. Salmhofer
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Persistence of exponential decay and spectral gaps for interacting fermions by De Roeck, Wojciech (Author) , Salmhofer, Manfred (Author) ,


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