4 papers
Exact four-spinon dynamical correlation function in isotropic Heisenberg model
A. Abada, A. H. Bougourzi, S. Seba +1
We discuss some properties of the exact four-spinon dynamical correlation function in the antiferromagnetic spin 1/2 -model, the expression of which we derived recently.…
Temperature dependence of the response function of hot nuclear matter
Abdellatif Abada, Dominique Vautherin
The description of collective motion in nuclei at finite temperature using the framework of the random phase approximation is discussed. We focus on the special case of the isovect…
Strangeness content of the nucleon within the NJL soliton model
Abdellatif Abada, H. Weigel, R. Alkofer +1
We investigated the form factors of the nucleon associated with the nonet vector current in the framework of the generalized Yabu--Ando approach to the chiral soliton of the Nambu-…
Two-Phonon States in Alkali-Metal Clusters
Abdellatif Abada, Dominique Vautherin
Two phonon-states of alkali-metal clusters (treated as jellium spheres) are calculated by using a method based on a perturbative construction of periodic orbits of the time-depende…