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TZID:Europe/Vienna
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DTSTART:20270328T030000
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DTSTART:20261025T020000
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BEGIN:VEVENT
DTSTAMP:20261023T110530Z
UID:6a1e9cbf757f2024666156@ist.ac.at
DTSTART:20261124T150000
DTEND:20261124T160000
DESCRIPTION:Speaker: Bruno Nachtergaele\nhosted by Laszlo Erdös\nAbstract:
  I will review several recent results about the ground state gap of quantu
 m many-body systems and the question of spectral gap stability under pertu
 rbations. I will discuss results for the AKLT model on the hexagonal latti
 ce\, in particular the Local Quantum Topological Order (LTQO) property for
  it. The LTQO property will be further clarified by considering two one-di
 mensional models with multiple ground states: certain Haldane pseudopotent
 ials and the Temperley-Lieb spin chains. For the first I will present a ne
 w gap stability result. The latter provide examples of an unstable ground 
 state gap.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:boosthui@ist.ac.at
SUMMARY:Bruno Nachtergaele: Stability of Gapped Ground States
URL:https://talks-calendar.ista.ac.at/events/6719
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