Thursday's seminar

[CM ICTP - Trieste]

CONDENSED MATTER SECTION

	
SEMINAR on Disorder and strong electron correlations



Thursday, 24 April      -  11:00 a.m.



Seminar Room,  Leonardo Bldg.- first floor




I. CARUSOTTO  (BEC-INFM Università degli Studi di Trento)



"Numerical observation of Hawking radiation from acoustic black holes 
in atomic Bose-Einstein condensates"



Abstract

Although the existence of black-holes has been indirectly proven on 
astrophysical grounds, no experimental evidence of their slow but 
relentless evaporation into Hawking radiation has been obtained yet.  
In the present talk we report numerical simulations of a condensed 
matter system which shares many properties with gravitational 
black-holes, in particular the emission of a Hawking radiation: a 
horizon is created in a moving cloud of ultracold atoms in the 
nanoKelvin range where atoms behave in a coherent way as a 
Bose-Einstein condensate, and the presence of Hawking radiation is 
inferred from peculiar correlations of the quantum fluctuations of the 
atomic density.