47 citations · 113 across the 5 of their papers we have counts for
5 papers
Edge-localized states in quantum one-dimensional lattices
Ricardo A. Pinto, Masudul Haque, Sergej Flach
In one-dimensional quantum lattice models with open boundaries, we find and study localization at the lattice edge. We show that edge-localized eigenstates can be found in both bos…
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…
Quantum breathers in capacitively coupled Josephson junctions: Correlations, number conservation, and entanglement
R. A. Pinto, S. Flach
We consider the classical and quantum dynamics of excitations in a system of two capacitively coupled Josephson junctions. In the classical case the equations of motion admit discr…
Quantum localized modes in capacitively coupled Josephson junctions
R. A. Pinto, S. Flach
We consider the quantum dynamics of excitations in a system of two capacitively coupled Josephson junctions. Quantum breather states are found in the middle of the energy spectrum…
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…