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DTSTART;TZID=Europe/Paris:20241203T140000
DTEND;TZID=Europe/Paris:20241203T153000
DTSTAMP:20260413T223838
CREATED:20241202T083342Z
LAST-MODIFIED:20241202T091845Z
UID:11113-1733234400-1733239800@fermi.univ-tlse3.fr
SUMMARY:Caractérisation des paramagnétiques quantiques 3D à l’aide des contraintes de Lieb-Schultz-Mattis. - (Chunxiao Liu / LPT / Seminar). - 3/12/2024\, 14H
DESCRIPTION:Séminaire LPT \nChunxiao Liu (UC Berkeley) \nSeminar LPT\, 3/12/2024\, 14H\, 3R4\, salle de conférence \nSummary\nQuantum paramagnets represent intriguing quantum phases that evade ordering even at absolute zero temperature. While detecting their presence is relatively straightforward\, unraveling their fundamental nature can be a challenging task. In this talk\, I will present our recent work [1] on Lieb-Schultz-Mattis (LSM) constraints which prohibit certain quantum paramagnets from being a « trivial » one. I will illustrate the use of these results through two examples : (1) the prediction of a Dirac spin liquid in the triangular lattice compound NaYbO2\, and (2) the characterization of U(1) quantum spin liquids in a pyrochlore S=1/2 antiferromagnet. I will highlight the topological response theory underlying the LSM constraints that we developed\, containing information about symmetry\, excitations\, and lattice defects\, applicable to all 3D quantum paramagnets. \n[1] Liu & Ye\, arXiv:2410.03607
URL:https://fermi.univ-tlse3.fr/event/tba-chunxiao-liu-lpt-seminar-3-12-2024-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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