mad mathematician's latest activity
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mad mathematician posted the thread Engineering Olympiad Grades 9-12 (or recent graduates) in General Engineering.I once tried to participate in a math students' olympiad but failed misreably. A few years ago I heard of Engineering students' type of... -
mad mathematician replied to the thread Graduate Dasgupta et al., What is the alternative to a unique dS vacua?.The same old natural philosophy problem of absolute space and time. Can't we regard SR and GR's spacetime as that "background"? Anyway...
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mad mathematician replied to the thread Graduate Dasgupta et al., What is the alternative to a unique dS vacua?.I reckon you didn't read Peskin and Schroeder nor Srednicki's QFT books, now did you? Monstrous books.... :olduhh:
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mad mathematician replied to the thread Graduate Dasgupta et al., What is the alternative to a unique dS vacua?.Simple, not simpler... :oldbiggrin: If it's simple, then it must be simpler than something else, doesn't it?! :-D
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mad mathematician replied to the thread RIP Daniel Kleppner (1932-2025).Same here, I mean in my undergraduate years. Someone back then recommended Kleppner's and Kolenkow's textbook. Tough exercises, I am not...
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Classical Mechanics by Kleppner and Kolenkow was one of the first physics books I studied. It was very much my style of book. I spent...
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mad mathematician replied to the thread Undergrad Strings 2025 Conference: Insights, Criticisms, and Key Highlights.Well when its biggest advocates wins the Fields medal (a prize in maths), and had to encourage someone to invent a prize (almost...
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mad mathematician replied to the thread Graduate Couldn't the cosmological constant also have some sort of "dynamics"?.I wonder how difficult it would be to to write down a model where it changes with time.
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mad mathematician reacted to PeterDonis's post in the thread Graduate Couldn't the cosmological constant also have some sort of "dynamics"? with
Like.
Because a constant is the simplest model, and we have no evidence that it's not constant, so we use the simplest model that's consistent... -
mad mathematician replied to the thread Graduate New ideas on confinement and meson masses from Brazil.Complex Gauge theory, sounds someithing that resonates with the book by Yurin Manin.
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mad mathematician posted the thread Graduate Couldn't the cosmological constant also have some sort of "dynamics"? in Cosmology.Why should we believe that the cosmological constant is indeed a constant, and not another parameter that changes with spacetime...
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mad mathematician replied to the thread Particle Neutrino Particle Physics Book.Try Mark Thomson's book on particle theory.
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mad mathematician replied to the thread Announcement RIP Vanadium 50.My sincere condolences, we had some fierce posts in beyond SM of particles. Though I can't tell if he posted when I started back in 2002.
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mad mathematician reacted to Fra's post in the thread Graduate How to fix Relativistic QM so it's consistent? with Like.
I think the OP means RQM=RelativisticQM, not RQM=Rovellis RelationalQM, are you talking anout the same thing? IMO, from perspective of...
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mad mathematician replied to the thread Undergrad Infinite number of spatial dimensions (maybe also time dimensions).Hi @anuttarasammyak I know what is a Hilbert space. x in you case is spatial coordinate, so if I want inifinite number of coordinates...