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20 papers · 1 filter
Algebraic Gorkov solution in finite systems for the separable pairing interaction
R. M. Id Betan, C. E. Repetto
An algebraic Quantum Field Theory formulation of separable pairing interaction for spherical finite systems is presented. The Lipkin formulation of the model Hamiltonian and model…
From bound states to the continuum
Calvin W. Johnson, Kristina D. Launey, Naftali Auerbach +35
This white paper reports on the discussions of the 2018 Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program "From bound states to the continuum: Connecting bo…
An approximation to the Woods-Saxon potential based on a contact interaction
C. Romaniega, M. Gadella, R. M. Id Betan +1
We study a non-relativistic particle subject to a three-dimensional spherical potential consisting of a finite well and a radial - contact interaction at the well edge. This…
Approximate solutions of one dimensional systems with fractional derivative
Alberto Ferrari, Manuel Gadella, Luis Lara +1
The fractional calculus is useful to model non-local phenomena. We construct a method to evaluate the fractional Caputo derivative by means of a simple explicit quadratic segmentar…
Ferromagnetic fluctuations in the Rashba-Hubbard model
Andrés Greco, Matías Bejas, Andreas P. Schnyder
We study the occurrence and the origin of ferromagnetic fluctuations in the longitudinal spin susceptibility of the --Rashba-Hubbard model on the square lattice. The combine…
Influence of Rashba spin-orbit coupling on the 0- transition and Kondo temperature in 1D superconductors
I. Hamad, F. Lisandrini, C. Gazza +1
Using the framework of the density-matrix renormalization group (DMRG), we study a quantum dot coupled to a superconducting nanowire with strong Rashba spin-orbit coupling. Regardi…