Snorre Bergan

• Kvaal, Simen; Bergan, Snorre; Fredheim, Håkon Richard; Larsen, Nadia S. & Neshveyev, Sergey (2025). A mathematical approach to CC theory. Fulltekst i vitenarkiv Vis sammendrag

  In this talk, I will outline work being carried out in an interdisciplinary project with the Operator Algebra group at Department of Mathematics, UiO. We have done a complete reformulation of coupled-cluster methods from the point of view of the bivariational principle, which gives a more “geometric” view. We have formulated general strategies for a posteriori and a priori error estimation using a nonlinear inf-sup theorem. Several results and proofs are simplified compared to those found in the literature. We are able to place all the analyses presently in the literature in this framework, in particular the seminal works by Rohwedder—Schneider, and Hassan—Maday—Wang

• Bergan, Snorre (2023). Matematikk, kvantefysikk og kvanteteknologi. Fulltekst i vitenarkiv
• Bergan, Snorre (2022). A C*-algebra approach to coupled-cluster theory. Fulltekst i vitenarkiv

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