35 citations · 95 across the 6 of their papers we have counts for
6 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…
DDW Order and its Role in the Phase Diagram of Extended Hubbard Models
Chetan Nayak, Eugene Pivovarov
We show in a mean-field calculation that phase diagrams remarkably similar to those recently proposed for the cuprates arise in simple microscopic models of interacting electrons n…
Odd-Frequency Density Waves: Non-Fermi-Liquid Metals with an Order Parameter
Eugene Pivovarov, Chetan Nayak
We consider states with a charge- or spin-density wave order parameter which is odd in frequency, so that the order parameter vanishes at zero frequency and there is a conventional…
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…