Authors: Alessandro Giuliani, Vieri Mastropietro, Marcello Porta

Title: Absence of interaction corrections in graphene conductivity
 
Abstract: The exact vanishing of the interaction corrections to the zero temperature and zero frequency conductivity of graphene in the presence of weak short range interactions is rigorously established.

Keywords: graphene, conductivity, Ward identities, renormalization group

Alessandro Giuliani
Dipartimento di Matematica
Università di Roma Tre
L.go S. Leonardo Murialdo 1, 00146 Roma - Italy
e-mail: giuliani AT mat DOT uniroma3 DOT it

Vieri Mastropietro
Dipartimento di Matematica
Università di Roma Tor Vergata
V.le della Ricerca Scientifica 1, 00133 Roma - Italy
e-mail: mastropi AT mat DOT uniroma2 DOT it

Marcello Porta
Dipartimento di Fisica
Università di Roma Sapienza
P.le A. Moro, 00185 Roma - Italy
e-mail: marcello DOT porta AT roma1 DOT infn DOT it