Stability of Ferromagnetism in Hubbard Models with Nearly-Flat Bands

10 Jan 2019 Tasaki Hal

Whether spin-independent Coulomb interaction in an electron system can be the origin of ferromagnetism has been an open problem for a long time. Recently, a "constructive" approach to this problem has been developed, and the existence of ferromagnetism in the ground states of certain Hubbard models was established rigorously... (read more)

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  • STRONGLY CORRELATED ELECTRONS
  • STATISTICAL MECHANICS
  • MATHEMATICAL PHYSICS
  • MATHEMATICAL PHYSICS