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SUMMARY:Emergent gauge fields\, fractionalised quasiparticles and dynamica
 l fractals - Claudio Castelnovo (Cavendish)
DTSTART:20240221T140000Z
DTEND:20240221T150000Z
UID:TALK212473@talks.cam.ac.uk
CONTACT:Hannah Banks
DESCRIPTION:Field theoretic descriptions are a powerful tool to capture th
 e emergent\, collective behaviour of strongly correlated many body systems
  on large scales. Gauge field theories in particular are of special intere
 st in modern physics\, due to their connection to topological behaviour an
 d fractionalisation. Through this modelling\, the original dense system of
  strongly interacting degrees of freedom can be interpreted as an emergent
  vacuum with quasiparticle excitations whose properties are closely relate
 d to the nature of the emergent gauge fields. This change in perspective a
 ffords us an unprecedented insight into the properties of these systems an
 d in predicting new behaviour. We will review some of these concepts in a 
 model and material that has become a paradigmatic case in point: spin ice.
  We shall further discuss how microscopic details can lead to surprisingly
  important effects in the cooperative dynamics of these systems\, which be
 comes underpinned by near-fractal structures.
LOCATION:MR2
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