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SUMMARY:Berry phase in quantum field theory - Po-Shen Hsin (Caltech)
DTSTART:20201112T170000Z
DTEND:20201112T180000Z
UID:TALK151438@talks.cam.ac.uk
CONTACT:Pietro Benetti Genolini
DESCRIPTION:We will discuss Berry phase in family of quantum field theorie
 s and its implication to the low energy physics. The family is labelled by
  parameters which we promote to be spacetime-dependent background fields\,
  and the Berry phase is equivalent to topological term of the parameters i
 n the effective action. We use Berry phase to study diabolic points in the
  phase diagram and discuss applications including deconfined quantum criti
 cality in 2+1d and new tests for boson/fermion dualities.
LOCATION:Online (Zoom)
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