10 citations · 10 across the 1 of their papers we have counts for
4 papers
Exchange interaction in quantum rings and wires in the Wigner-crystal limit
Michael M. Fogler, Eugene Pivovarov
We present a controlled method for computing the exchange coupling in correlated one-dimensional electron systems based on the relation between the exchange constant and the pair-c…
Spin exchange in quantum rings and wires in the Wigner-crystal limit
Michael M. Fogler, Eugene Pivovarov
We present a controlled method for computing the exchange coupling in strongly correlated one-dimensional electron systems. It is based on the asymptotically exact relation between…
Transitions from small to large Fermi momenta in a one-dimensional Kondo lattice model
Eugene Pivovarov, Qimiao Si
We study a one-dimensional system that consists of an electron gas coupled to a spin-1/2 chain by Kondo interaction away from half-filling. We show that zero-temperature transition…
Hubbard model with SU(4) symmetry
Eugene Pivovarov
In the model considered, the nonlocal interaction of the fermions in different sublattices of a bipartite lattice is introduced. It can also be regarded as local interaction of fer…