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SUMMARY:How should we use (classical) computers to simulate (realistic) el
 ectrons? - George Booth (King's College London)
DTSTART:20260311T161500Z
DTEND:20260311T171500Z
UID:TALK244819@talks.cam.ac.uk
CONTACT:Andrea Pizzi
DESCRIPTION:Many interacting electrons give rise to the fantastic diversit
 y of properties of materials and chemical systems in the world around us. 
 However\, predicting the properties of these systems without resorting to 
 empiricism or experimental guidance is often held up as an example of an 
 ‘exponential wall’ for numerical simulation\, and the necessity of qua
 ntum computers. However\, despite this formal scaling\, in the last 100 ye
 ars the field has made great strides into a truly first principles simulat
 ion of correlated quantum matter. We will take a walk through this concept
 ual landscape of ideas and approximations that have proven effective in br
 eaking down this wall\, and demonstrate some of the new numerical tools wh
 ich are emerging to treat these systems. In particular\, we will focus on 
 new approaches to bridge the gap between the accurate simulation of phenom
 enological lattice models\, and a systematically improvable description of
  electronic properties in realistic materials science.
LOCATION:Ray Dolby Auditorium\, Ray Dolby Centre\, Cavendish Laboratory\, 
 JJ Thomson Avenue\, CB3 0US
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