Articulo
Exact electronic Green functions in a Luttinger liquid with long-range interactions
Autor
Iucci, Carlos Aníbal
Naón, Carlos María
Institución
Resumen
We compute the two-point (equal-time) electronic Green function in a Tomonaga-Luttinger system with long-range electron-electron interactions. We obtain an analytical expression for a “super long-range” potential of the form V(x) = e<sup>2</sup>d<sup>-∈</sup>/|x|<sup>1-∈</sup>. As a consistency check of our computational technique we also consider the particular case of a Coulomb potential. Our result confirms the -C(log x)<sup>3/2</sup> long-distance behavior first obtained by Schulz. Facultad de Ciencias Exactas