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SUMMARY:What is quantum field theory? - Professor Nick Dorey (University o
 f Cambridge)
DTSTART:20200124T190000Z
DTEND:20200124T200000Z
UID:TALK136039@talks.cam.ac.uk
CONTACT:Valentin Hübner
DESCRIPTION:Quantum field theory (QFT) has been very successful in describ
 ing nature\, in some cases yielding the most precise agreement between exp
 eriment and theory ever achieved. It underlies our current understanding o
 f high energy physics\, cosmology and condensed matter physics. Despite th
 is\, the theory does not have a satisfactory first-principles definition. 
 Even its most accurate predictions mentioned above\, come from summing the
  first few terms of series which is ultimately divergent. I will review th
 is problem and also review various ways in which QFT has influenced (and b
 een influenced by) different areas of mathematics.
LOCATION:MR2\, Centre for Mathematical Sciences
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