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Alexander A. Ovchinnikov

Publications and source records attributed to Alexander A. Ovchinnikov.

2 recordsLinked to original sources
arXiv2002

Strongly Interacting Luttinger Liquid and Superconductivity in an Exactly Solvable Model

A new family of exactly solvable one dimensional models with a hard-core repulsive potential is solved by the Bethe Ansatz for an arbitrary hard-core radius. The exact ground state phase diagrams in a plane 'electron density - on-site interaction' have been studied for several values of a hard-core radius. It is shown that superconducting phase and strongly interacting Luttinger liquid state are coexisted at a high electron density and unusually high value of repulsive on-site Coulomb interaction.

cond-mat.str-el↗
arXiv2001

One dimensional strongly interacting Luttinger liquid of lattice spinless fermions

The spinless fermion model with hard core repulsive potential extended on a few lattice sites is considered.The Luttinger liquid behaviour is studied for the different values of a hard core radius. A critical exponent of the one particle correlation function for arbitrary electron density and coupling constant are obtained.

cond-mat.str-el↗