BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Robert H. Jonsson (Nordic Institute for Theoretical Physics) DTSTART:20231121T070000Z DTEND:20231121T090000Z DTSTAMP:20260417T072017Z UID:3cqfs/2 DESCRIPTION:Title: Ga ussian states\, partner modes and an entanglement duality\nby Robert H . Jonsson (Nordic Institute for Theoretical Physics) as part of Tricontine ntal Quantum Fundamentals Seminar\n\n\nAbstract\nGaussian states appear ev erywhere in quantum physics - from condensed matter\, to quantum optics an d quantum field theory in curved spacetimes. In this talk I aim for three objectives related to Gaussian states:\n\nFirst\, I discuss their partner mode entanglement structure which is well known\, but maybe not widely kno wn. This is the fact that a pure Gaussian state under any bipartition deco mposes into a sum of two-mode squeezed states\, for example\, in the Unruh effect or in Einstein-Bose condensates.\n\nSecond\, I review the powerful Kähler structure formalism for Gaussian states. It captures the geometry of Gaussian states\, it is very practical for applications\, and it treat s both bosons and fermions simultaneously.\n\nThird\, to showcase an examp le connecting bosonic and fermionic systems\, I will present an entangleme nt duality which arises in supersymmetric Gaussian states [1]. Here\, boso nic and fermionic partner subsystems\, canonically identified by the super charge construction\, exhibit an intriguing duality of their entanglement spectra.\n\n(Time permitting\, as a special application\, we consider topo logical insulators and superconductors and their SUSY partners\, discussin g the recently derived classification of supercharges in this context [2]. )\n\n[1] Jonsson\, Robert H.\, Lucas Hackl\, and Krishanu Roychowdhury. “Entanglement Dualities in Supersymmetry.” Physical Review Research 3\ , no. 2 (June 16\, 2021): 023213.\n\n[2] Gong\, Zongping\, Robert H. Jonss on\, and Daniel Malz. “Supersymmetric Free Fermions and Bosons: Locality \, Symmetry\, and Topology.” Physical Review B 105\, no. 8 (February 24\ , 2022): 085423.\n LOCATION:https://researchseminars.org/talk/3cqfs/2/ END:VEVENT END:VCALENDAR