Sabine Hossenfelder, Gabriele Carcassi and Dan Bullard on Quantum Horse Shit

There's an hilarious discussion on her Patreon page, if I may say so myself! 😀

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Here's Gabriele Carcassi  flogging a dead horse:

See Projective Hilbert Space, Hopf fibration and Bloch sphere. See also Janet Axelrud and Roger Penrose on Singularities and Gabriele Carcassi on Quantum States and  Curt Jaimungal Talking With Roger Penrose.

And on infinite dimensional quantum spaces:

See Julian Barbour - Complexity as Time. Julian recommends the book Quantum Theory at the Crossroads: Reconsidering the 1927 Solvay Conference. See also the 500+ page paper of the same title https://arxiv.org/abs/quant-ph/0609184:

We reconsider the crucial 1927 Solvay conference in the context of current research in the foundations of quantum theory. Contrary to folklore, the interpretation question was not settled at this conference and no consensus was reached; instead, a range of sharply conflicting views were presented and extensively discussed. Today, there is no longer an established or dominant interpretation of quantum theory, so it is important to re-evaluate the historical sources and keep the interpretation debate open. In this spirit, we provide a complete English translation of the original proceedings (lectures and discussions), and give background essays on the three main interpretations presented: de Broglie's pilot-wave theory, Born and Heisenberg's quantum mechanics, and Schroedinger's wave mechanics. We provide an extensive analysis of the lectures and discussions that took place, in the light of current debates about the meaning of quantum theory. ...

See also Entanglement and The Measurement Problem (2022) by Art Hobson:

The measurement state’s entanglement and its nonlocal properties, far from being paradoxical, are needed in order to guarantee that the collapse occurs simultaneously across all branches of the superposition. Eight previous insolubility proofs failed because they did not incorporate nonlocal properties. Nonlocality is a central feature of quantum measurement.

There is no need for a special collapse postulate because the entangled state is the collapsed state. Collapse occurs instantly upon entanglement.

See also  Julian Barbour - Complexity as Time.

Energy and Entropy in Quantum Mixed States

See also Curt Jaimungal Interviews Gabriele Carcassi. There is a very helpful book they've written: Assumptions of Physics by Gabriele Carcassi and Christine A. Aidala.

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Here's Dan Bullard on the subtleties of Total Harmonic Distortion, and some poor woman from Korea who learned signals and systems in the good old US of A:

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Maybe she was told that if she wanted a career she'd better help obfuscate the field. Harmonic distortion is an issue in Spontaneous Parametric Downconversion. See Anne L'Huillier's Nobe Prize lecture, especially the bit towards the end where she talks about the delay they were able to measure between the emission of the photons in the pair. All they know is the delay in terms of a phase constant, not the absolute time. This is in Angela Collier, Anne L'Huillier and Jacob Barandes on Physics.