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TZID:Europe/Vienna
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DTSTART:20200329T030000
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DTSTART:20191027T020000
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BEGIN:VEVENT
DTSTAMP:20260406T043404Z
UID:5e1736535619c547071524@ist.ac.at
DTSTART:20200127T100000
DTEND:20200127T110000
DESCRIPTION:Speaker: Marius Lemm\nhosted by Robert Seiringer\nAbstract: Qua
 ntum spin systems are many-body models which are of interest in modern phy
 sics and at the same time amenable to rigorous mathematical analysis. A ce
 ntral question about a quantum spin system is whether its Hamiltonian oper
 ator exhibits a spectral gap above the ground state. The existence of a sp
 ectral gap has far-reaching consequences for the low-energy physics and th
 e ground state complexity. In this talk\, we survey recent progress on der
 iving spectral gaps for frustration-free quantum spin systems in dimension
 s greater than 1\, e.g.\, in antiferromagnetic models of Affleck-Kennedy-L
 ieb-Tasaki (AKLT).
LOCATION:Mondi Seminar Room 2\, Central Building\, ISTA
ORGANIZER:tguggenb@ist.ac.at
SUMMARY:Marius Lemm: Spectral gaps in quantum spin systems
URL:https://talks-calendar.ista.ac.at/events/2535
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