24 citations · 39 across the 3 of their papers we have counts for
3 papers
cond-mat.quant-gas2009
Fermionic bound states on a one-dimensional lattice
J. -P. Nguenang, S. Flach
We study bound states of two fermions with opposite spins in an extended Hubbard chain. The particles interact when located both on a site or on adjacent sites. We find three diffe…
cond-mat.mes-hall2008★ 15 cited
Boundary effects on quantum q-breathers in a Bose-Hubbard chain
Ricardo A. Pinto, Jean Pierre Nguenang, Sergej Flach
We investigate the spectrum and eigenstates of a Bose-Hubbard chain containing two bosons with fixed boundary conditions. In the noninteracting case the eigenstates of the system d…
cond-mat.mes-hall2007★ 24 cited
Quantum q-breathers in a finite Bose-Hubbard chain: The case of two interacting bosons
Jean Pierre Nguenang, R. A. Pinto, Sergej Flach
We study the spectrum and eigenstates of the quantum discrete Bose-Hubbard Hamiltonian in a finite one-dimensional lattice containing two bosons. The interaction between the bosons…