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UID:1402@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20200131T120000
DTEND;TZID=Europe/Berlin:20200131T130000
DTSTAMP:20200130T135004Z
URL:https://qft.physik.hu-berlin.de/next-seminars/diego-hofman-theoretical
 -physics-uva/
SUMMARY:Diego Hofman\, Theoretical Physics\, UVA - 
DESCRIPTION:D. Hofman\, UVA\n\nTitle: "Higher form symmetries and superflui
 ds"\n\nAbstract: I will describe superfluid hydrodynamics as the hydrodyna
 mic theory of a system with an emergent anomalous higher-form symmetry. T
 he higher-form charge counts the winding planes of the superfluid -- its
  constitutive relation replaces the Josephson relation of conventional s
 uperfluid hydrodynamics. This formulation puts all hydrodynamic equations
  on equal footing. The anomalous Ward identity can be used as an alternat
 ive starting point to prove the existence of a Goldstone boson\, without
  reference to spontaneous symmetry breaking. This provides an alternative
  characterization of Landau phase transitions in terms of higher-form sy
 mmetries and their anomalies instead of how the symmetries are realized. 
 This treatment is more general and\, in particular\, includes the case of 
 BKT transitions.
CATEGORIES:Pizza Seminars
LOCATION:Room 2'07\, IRIS Building\, Zum großen Windkanal 6\, Berlin\, Ger
 many
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