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TZID:Europe/Vienna
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DTSTART:20170326T030000
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DTSTART:20171029T020000
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BEGIN:VEVENT
DTSTAMP:20260427T115805Z
UID:593e7ce54d85f546580362@ist.ac.at
DTSTART:20171017T133000
DTEND:20171017T150000
DESCRIPTION:Speaker: Zhao Zhang\nhosted by Maksym Serbyn\nAbstract: The nat
 ure of entanglement in many-body systems is a focus of intense research wi
 th the observation that entanglement holds interesting information about q
 uantum correlations in large systems and their relation to phase transitio
 ns. In particular\, it is well known that although generic\, many-body sta
 tes have large\, extensive entropy\, ground states of reasonable local Ham
 iltonians carry much smaller entropy\, often associated with the boundary 
 length through the so-called area law. Here we introduce a continuous fami
 ly of frustration-free Hamiltonians with exactly solvable ground states an
 d uncover a remarkable quantum phase transition whereby the entanglement s
 caling changes from area law into extensively large entropy. This transiti
 on shows that entanglement in many-body systems may be enhanced under spec
 ial circumstances with a potential for generating useful entanglement for 
 the purpose of quantum computing and that the full implications of localit
 y and its restrictions on possible ground states may hold further surprise
 s.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Zhao Zhang: From Area Law to Extensive Entanglement Entropy in a Ne
 w Quantum Phase Transition
URL:https://talks-calendar.ista.ac.at/events/830
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