On the Density-Density Critical Indices¶in Interacting Fermi Systems |
| |
Authors: | G Benfatto V Mastropietro |
| |
Institution: | 1.Dipartimento di Matematica, Università di Roma “Tor Vergata”, Via della Recerca Scientifica,?00133 Roma, Italy,IT |
| |
Abstract: | The behaviour of correlation functions of d=1$ interacting fermionic systems is determined by a small number of critical indices. We prove that one of them is exactly
zero. As a consequence, the behavior of the Fourier transform of the density-density correlation at zero momentum is qualitatively
unaffected by the interaction, contrary to what happens at , if is the Fermi momentum. The result is obtained by implementing Ward identities in a Renormalization Group approach.
Received: 12 November 2001 / Accepted: 25 February 2002?Published online: 2 October 2002 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|