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UID:1579@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20210507T140000
DTEND;TZID=Europe/Berlin:20210507T150000
DTSTAMP:20210505T155245Z
URL:https://qft.physik.hu-berlin.de/next-seminars/chiaffrino-hu-berlin/
SUMMARY:Christoph Chiaffrino HU Berlin - 
DESCRIPTION:Dr. Christoph Chiaffrino (HU Berlin)\n\nTitle: A string field t
 heory inspired regularization of point-particle QFT\n\nAbstract:\n\nString
  field theory vertices are regularized by stubs. These are tubes/strips re
 presenting the propagation of external string states into a vertex. I will
  use this idea to systematically regularize BV-quantized point particle QF
 Ts. As an example\, I will apply this to (vector + axial) QED. We will fin
 d a family of regularized actions (parametrized by a stub parameter) that 
 is gauge invariant to all orders. I use this family to compute the axial a
 nomaly as an obstruction to a solution to the quantum master equation. I w
 ill also show how these actions are related to each other via canonical tr
 ansformations on the space of BV fields/anti-fields. This ensures that all
  actions are physically equivalent.
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