[Todos] Seminario HOY: Localization-Delocalization Transition in the Random Dimer Model

[Pablo Capuzzi]

Lunes 21 de Diciembre 14:30 hs
Aula de Seminario de Fisica.
	
	"Localization-Delocalization Transition in the Random Dimer Model"
		Patrizia Vignolo - INLN, Université de Nice-Sophia Antipolis, CNRS

 The random-dimer model is probably the most popular model for 1D
disordered system where correlations are responsible for delocalization of
the wavefunctions. This is the primary model used to justify the
insulator-metal transition in conducting polymers and in DNA. However, for
such systems, the localization-delocalization regimes have only been
observed by deeply modifying the system itself, including the correlation
function of the disordered potential. In this letter, we demonstrate that,
using an ultracold atomic mixture, the transition can be crossed simply by
externally tuning the interspecies interactions, and without modifying the
impurity correlations.

			Estan todos cordialmente invitados,
							Pablo
		
-- 
Dr. Pablo Capuzzi
Departamento de Fisica, FCEN
Universidad de Buenos Aires
Ciudad Universitaria, Pab. I
C1428EGA Buenos Aires
ARGENTINA
E-mail: capuzzi en df.uba.ar
Office: 2.164
Phone: +54-11-4576-3390  ext. 837
Fax: +54-11-4576-3357