Impurity scattering in 1D ring of interacting electrons

Impurity scattering in 1D ring of interacting electrons

The stability of the lD Luttinger hquid phase of interacting spinless particles (t V mortel) to an on-site diagonal disorder is studied by exact diagonalization of small ID

Magnetic impurity coupled to interacting conduction electrons.

We consider a magnetic impurity which interacts by hybridization with a system of weakly correlated electrons and determine the energy of the ground state by means of an 1/Nf expansion. The correlations among the conduction electrons are described by a Hubbard Hamiltonian and are treated to lowest order in the interaction strength. We find that their effect on the Kondo temperature, TK, in the ...

Tunneling of Interacting Fermions in 1D Systems

Using the self-consistent Hartree–Fock approximation for spinless electrons at zero temperature, we study tunneling of the interacting electron gas through a single δ barrier in a finite one-dimensional wire connected to contacts. Our results exhibit features known from correlated many-body models. In particular, the conductance decays with the wire length as ∝ L−2α, where the power α is univer...

Entanglement of electrons in interacting molecules

Quantum entanglement is a concept commonly used with reference to the existence of certain correlations in quantum systems that have no classical interpretation. It is a useful resource to enhance the mutual information of memory channels or to accelerate some quantum processes as, for example, the factorization in Shor’s Algorithm. Moreover, entanglement is a physical observable directly measu...

Interacting Electrons and Localized Spins :