BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Peter Love (Tufts University) DTSTART:20260513T190000Z DTEND:20260513T200000Z DTSTAMP:20260513T133453Z UID:MathPic/148 DESCRIPTION:Title: Non-contextual approximations\, Magic\, and Correlation energy\nby P eter Love (Tufts University) as part of Mathematical Picture Language Semi nar\n\nInteractive livestream: https://harvard.zoom.us/j/779283357\nView-o nly livestream: https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/v ideos\nLecture held in Jefferson 368.\n\nAbstract\nWhat distinguishes quan tum from classical computation? Contextuality\, entanglement and more rece ntly magic are leading measures of nonclassicality. I will describe non-co ntextual Hamiltonians\, which arise from a generalization of the Kochen-s pecker paradox and Peres-Mermin square. I will give various properties of their eigenspaces and define contextual subspace methods that allow any Ha miltonian to be treated as a sum of contextual and non-contextual parts. R ecent interest in the stabilizer Renyi entropy as a measure of non-stabili zerness motivates the question of how "magical" are contextual subspace me thods? I will describe recent work evaluating magic in contextual subspace s for electronic structure problems\, and connecting magic and correlation energy in these subspaces.\n LOCATION:https://researchseminars.org/talk/MathPic/148/ URL:https://harvard.zoom.us/j/779283357 URL:https://www.youtube.com/channel/UCrlS3CuPlahBp_M46fDaWVw/videos END:VEVENT END:VCALENDAR