Peter Warwick Morgan
@PeterMorganQF
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Delving into QM, QFT, CM/QM, random fields/QFT. Refiguring renormalization.
New Haven, Connecticut
Joined May 2011
For anyone who takes data seriously, "A Dataset & Signal Analysis Interpretation of Quantum Mechanics" may be a suitable complement to @skdh's take here,
OpenAI’s Sam Altman and other AI preachers have claimed that AI might one day “solve physics.” Is this true? What would this even mean? In this video I have a look at what current and potentially future AI could do for physics.
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Bleeding edge teaching in 1903: Maxwell's equations, cautiously. Elsewhere, elsebody, elsething.
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@aip_history @PhysicsToday The point of this alt-history is *not* that they should have done what they didn't do. Bricks should not be thrown by a fool. It's that we can pick up the path not taken as a new history a hundred years later. /end.
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@aip_history @PhysicsToday On the second page of Eckart's 1926, he has an exposition of the operator algebra that he applies in the first section to CM, with no mention of QM. Had he or someone else *developed* the "present simple interpretation" instead of abandoning it, we could be where we are now, 5/
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@aip_history @PhysicsToday Koopman's article focuses on the Hilbert space aspect, whereas Eckart focused on the algebraic structure of CM, which makes it more clear that CM has a noncommutative structure (obviously, not clear enough!).Heilbron&Rovelli have this alt-history in 4/
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@aip_history @PhysicsToday Koopman's article in PNAS 1931: Birkhoff and von Neumann focused on how different quantum logic is from classical logic instead of seeing quantum logic as a natural extension of classical logic in Koopman's Hilbert space formalism for CM. 3/.
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@aip_history @PhysicsToday URL: With a *generous* modern take, Eckart's algebraic approach anticipates Koopman's construction of a Hilbert space formalism for Classical Mechanics. Birkhoff and vN used that formalism to prove the ergodic theorem, but didn't see beyond that. 2/.
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Ryan Dahn @aip_history has a nice OA article adapted from @PhysicsToday, in which he demythologizes the QM history (IMO ~needed). I particularly like his reminder that Carl Eckart's contribution was also worthwhile, insofar as his paper was something of a missed opportunity. 1/
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So I made a renormalization thread on @tak3sh8's post, Eventually more people will notice that even though this is far from perfect it's also more than BS, right?.
@tak3sh8 A life𝘵𝘪𝘮𝘦, 1950-2025, to realize that renormalization is more about nonlinearity than about scale. The nonlinearity is blatant for real-space renormalization, for a quantum field measurement operator-valued distribution smeared by a test function f(x) on Minkowski space, M_f
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RT @FirstPrincip1es: From technology to behavioural economics, the @SloanFoundation's thoughtful approach has shaped major shifts in scienc….
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Renormalization is about reconstituting nonlinear interactions as well as about scale.
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My Dad, born on Friday, June 13th, 1930, always felt that 13s were lucky for him, and Friday 13ths especially, whatever others might think. Since I also exist only by his good luck, I feel much the same.
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A student in Bangladesh was thrilled enough by my colloquium talk at SEPS-NSU Dhaka that they organized a Q&A session two days later. The result is here,
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RT @STEM_inTamarian: He was always angry, shouting, and a kind of joyful in lecture. He was there to struggle mightily with physics and we….
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See video description for a link to the PDF of the slides on Dropbox. The video description also includes links to different sections of the talk.
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A colloquium talk-by-Zoom, at NSU Dhaka on Sunday May 18th. Image is the flyer for the talk, YouTube link in first reply.
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The abstract,
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For anyone who can't read, here's me reading out the title and abstract of the talk I'm giving in a few hours time. An imperfect way to use 1'36" of your day, but there it is.
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