Recent content by mad mathematician

I once tried to participate in a math students' olympiad but failed misreably. A few years ago I heard of Engineering students' type of olympiad but didn't participate in it. I guess it's geared to students below MSc level, anyways from the eligibility I wouldn't say no...

The same old natural philosophy problem of absolute space and time. Can't we regard SR and GR's spacetime as that "background"? Anyway you can't do any calculations without assuming a specific form for the metric.

I reckon you didn't read Peskin and Schroeder nor Srednicki's QFT books, now did you? Monstrous books.... :olduhh:

Simple, not simpler... :oldbiggrin: If it's simple, then it must be simpler than something else, doesn't it?! :-D

Same here, I mean in my undergraduate years. Someone back then recommended Kleppner's and Kolenkow's textbook. Tough exercises, I am not sure if I tried them all; but then I didn't really search for solutions in the net, and PF was a gem.

Well when its biggest advocates wins the Fields medal (a prize in maths), and had to encourage someone to invent a prize (almost specially tailored for him and his advocates); you understand what's the problem here.

I wonder how difficult it would be to to write down a model where it changes with time.

Complex Gauge theory, sounds someithing that resonates with the book by Yurin Manin.

Why should we believe that the cosmological constant is indeed a constant, and not another parameter that changes with spacetime dynamics? Obviously it would make the calculations even more intractable; but who said that life in the universe is easy?! :oldbiggrin: :oldeek:

Try Mark Thomson's book on particle theory.

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.

Hi @anuttarasammyak I know what is a Hilbert space. x in you case is spatial coordinate, so if I want inifinite number of coordinates then I would get a product of infinite number of dirac deltas.

but spacetime in QM isn't inifinite dimensional in spatial coordinates.

How would one build mathematically an infinite number of spatial dimensions theory? I can concieve mathematically an n-th vector or ##\mathbb{R}^{\infty}##, I had done so in my Topology course back then. But obviously it's not empirically possible to test. But is a theory of everything ought...

As for Sokal-like hoax I don't really know. I mean Bogdanov brothers got their doctor diplomas for a nonsense-type of publication. So who knows?