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SUMMARY:Amorphous solids from the glass transition to 1 Kelvin - Camille S
 calliet\, DAMTP
DTSTART:20191022T120000Z
DTEND:20191022T130000Z
UID:TALK132007@talks.cam.ac.uk
CONTACT:Professor Mike Cates
DESCRIPTION:Predicting the physical properties of amorphous solids\, which
  are out-of-equilibrium and disordered systems\, is a theoretical challeng
 e. We perform an extensive analytical and computational exploration of gla
 sses\, in particular of their energy landscape. We show that the structure
  of the landscape depends greatly on how the amorphous solid is prepared. 
 We reveal the existence of two physical regimes. In one regime\, relevant 
 to describe dense colloidal suspensions\, granular assemblies\, and emulsi
 ons\, the landscape has a hierarchical structure\, giving rise to new agin
 g dynamics in amorphous solids. In the other regime\, relevant to describe
  atomic and molecular glasses\, the landscape is relatively smoother\, wit
 h energy barriers correspond to localized defects. The quantum tunneling p
 roperties of these defects\, relevant to understand the transport properti
 es of glasses around 1 Kelvin\, are analyzed.\n\n
LOCATION:MR11\, CMS
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