25 citations · 94 across the 8 of their papers we have counts for
9 papers
Topology of contact points in Lieb-kagomé model
G. Abramovici
We analyse Lieb-kagomé model, a three-band model with contact points showing particular examples of the merging of Dirac contact points. We prove that eigenstates can be parametriz…
Incompatible Coulomb hamiltonian extensions
G. Abramovici
We revisit the resolution of the one-dimensional Schrödinger hamiltonian with a Coulomb /|x| potential. We examine among its self-adjoint extensions those which are compatible w…
Charge and Spin Density Waves observed through their spatial fluctuations by coherent and simultaneous X-ray diffraction
V. L. R. Jacques, E. Pinsolle, S. Ravy +2
Spatial uctuations of spin density wave (SDW) and charge density wave (CDW) in chromium have been compared by combining coherent and simultaneous X-ray diffraction experiments. Des…
Clifford modules and symmetries of topological insulators
Gilles Abramovici, Pavel Kalugin
We complete the classification of symmetry constraints on gapped quadratic fermion hamiltonians proposed by Kitaev. The symmetry group is supposed compact and can include arbitrary…
The one-dimensional Coulomb Problem
G. Abramovici, Y. Avishai
One-dimensional scattering by a Coulomb potential V(x)=lambda/|x| is studied for both repulsive (c>0) and attractive (c<0) cases. Two methods of regularizing the singularity at x=0…
Symmetries of the quasi-1d Bechgaard salts superconducting state in an applied magnetic field
N. Belmechri, G. Abramovici, M. Heritier
We investigate the possible superconducting pairing symmetries which would account for the latest experimental results on the Bechgaard salts. Using a renormalization group (R.G) t…