Real-space pairing in fermion systems
- 1 February 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 33 (3) , 1663-1666
- https://doi.org/10.1103/physrevb.33.1663
Abstract
A real-space tight-binding model of fermions involving the competition between an attraction V between the localized fermion pairs on different sites and an ordinary one-particle hopping t is introduced. The ground-state properties of its one-dimensional version are studied with use of numerically exact finite-chain calculations for up to N=10 sites. A transition of the essential singularity type between the band and the localized-pairs state is found for finite V/t.Keywords
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