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SUMMARY:Peter Love (Tufts University)
DTSTART:20260513T190000Z
DTEND:20260513T200000Z
DTSTAMP:20260602T193521Z
UID:MathPic/148
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MathPic/148/
 ">Non-contextual approximations\, Magic\, and Correlation energy</a>\nby P
 eter Love (Tufts University) as part of Mathematical Picture Language Semi
 nar\n\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/
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