BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:: Emanant and Emergent Symmetry Topological Order from Low-Energy 
 Spectrum
DTSTART:20260526T090000Z
DTEND:20260526T100000Z
DTSTAMP:20260513T205600Z
UID:indico-event-18817@indico.psi.ch
CONTACT:markus.mueller@psi.ch
DESCRIPTION:Speakers: Oemer Aksoy\n\nGiven a microscopic quantum model\, n
 ew symmetries may arise in its low-energy and long-wavelength limit. These
  emergent and/or emanant symmetries may differ substantially from those of
  the underlying microscopic model as they may be anomalous\, higher-form\,
  higher-group or non-invertible. A systematic way to describe the universa
 l properties of systems with such (generalized) symmetries is through a to
 pological field theory in one higher dimension\, also known as the symmetr
 y topological order (symTO). In this talk\, I will describe a method to co
 mpute the (emanant/emergent) symTO of a 1+1D system from its low-energy sp
 ectra. In particular\, I will apply this method to the antiferromagnetic s
 pin-1/2 Heisenberg chain\, whose low-energy properties are described by th
 e compact boson conformal field theory (CFT) at the self-dual radius. I wi
 ll show how one can identify the appropriate symTO that correctly captures
  the gapped phases neighboring this critical point and their symmetry brea
 king patterns. I will conclude by discussing how the symTO description car
 ries the signatures of the emergent SO(4) symmetry in the compact boson CF
 T\, along with some conjectures. \n\nhttps://indico.psi.ch/event/18817/
LOCATION:Teams
URL:https://indico.psi.ch/event/18817/
END:VEVENT
END:VCALENDAR