<div class="csl-bib-body">
<div class="csl-entry">Bippus, F., Krsnik, J., Kitatani, M., Aksamovic, L., Kauch, A. K., Roosz, G., Akšamović, L., Barišić, N., & Held, K. (2025, August 21). <i>Enhanced entanglement in the pseudogap</i> [Conference Presentation]. Joint Annual Meeting of the Austrian and Swiss Physical Society (ÖPG-SPS 2025), Wien, Austria. http://hdl.handle.net/20.500.12708/225617</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/225617
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dc.description.abstract
We show enhanced entanglement in the pseudogap regime of the Hubbard model using the dynamical vertex approximation (DGA). The pseudogap, a partially gapped electronic state, is observed near the superconducting transition in cuprates and nickelates. Leveraging DGA, we compute the quantum variance-a lower bound to the quantum Fisher information from the spin susceptibility directly on the imaginary Matsubara axis, circumventing the need for ill-controlled an- alytical continuation. The results show qualitative agreement with experimental data. Additionally, Ornstein-Zernike fits provide analytical insights.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.subject
correlated quantum materials
en
dc.title
Enhanced entanglement in the pseudogap
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
HUN-REN Wigner Research Centre for Physics, Hungary
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dc.relation.grantno
F 8600
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dc.type.category
Conference Presentation
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tuw.project.title
Zentrum für korrelierte Quantenmaterialien und festkörperbasierte Quantensysteme
