pines-demon's latest activity
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PWhich Feynman book/paper/lecture are you working from? Until you tell us that, we won’t know what’s in the figures that you’re asking...
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PEverytime that I deal with Bogoliubov transformations I get some sign wrong or a missing assumption. Let's take the case for fermions...
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Ppines-demon reacted to renormalize's post in the thread Prove that the integral is equal to ##\pi^2/8## with
Like.
It turns out that this very integral was posted 5 days ago on Mathematics Stack Exchange by "Dan" (is that you @Meden Agan ?)... -
Ppines-demon replied to the thread Prove that the integral is equal to ##\pi^2/8##.Is an instructor for an undergrad course? is the integral physics related? Is it a course of math, physics or something in particular...
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Ppines-demon replied to the thread Prove that the integral is equal to ##\pi^2/8##.So what is the context? Where you playing with numerics?
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Ppines-demon replied to the thread Working in the patent field.Welcome! I instantly imagined patent officers as quantized excitations of the patent field. :oldbiggrin:
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Ppines-demon replied to the thread Prove that the integral is equal to ##\pi^2/8##.What is the actual statement or context of this integral? Does it explictly say that it can be calculated using Fubini's theorem? Or is...
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Ppines-demon replied to the thread Prove that the integral is equal to ##\pi^2/8##.First get rid of the prefactor by going ##x=\sin^2(\theta)##, the rest should be good trigonometry.
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POr better yet, turn that frown upside down and make money while you sleep.
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Ppines-demon reacted to fresh_42's post in the thread Insights Groups, The Path from a Simple Concept to Mysterious Results with Like.
This would be an endless debate. I don't think that beauty is subjective; I think there are aesthetic scales on which beauty can be...
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Ppines-demon replied to the thread Insights Groups, The Path from a Simple Concept to Mysterious Results.I strongly disagree with most things Hossenfelder has ever said about quantum mechanics interpretations and non-physics stuff. That...
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PIndeed, so many stories in QFT to help us cope with the lack of rigor that we truly desire, ha! :cry:
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Ppines-demon replied to the thread History Biographies, History, Philosophy of Physics.E-J Ahn, Re-remembering Benjamin Whisoh Lee, promoter of gauge theories, Physics Today (2025) 78
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Ppines-demon reacted to dextercioby's post in the thread A Pauli–Villars ghost fields? with
Informative.
Dimensional regularization first, then MS or MSbar. I used the brief treatment of Bailin & Love. Another nice option would be P. Ramond. -
PDimensional regularization is great for practical purposes, but it does not provide a good intuitive conceptual picture of what is...
