I'm seeking the answer to whether gauge fixing conditions in QFTs are exact. For instance, in QED, we impose the Lorentz gauge by doing \partial_{\mu} A^{\mu} = 0 ...

Hello, I am trying to model the behaviour of a reactor vessel when some particles inside the container strike the inner wall using FINITE ELEMENT MODELLING software. I...

I might describe this post as a pre-preprint. I have not yet sent it anywhere, and would like to get comments and criticisms before I do. Title Does a Teleconnection...

In article , wrote: Hello, This may seem more like a math-type question, but I actually need...

Hello, This may seem more like a math-type question, but I actually need the answer in the context of a physical situation: Suppose an ant crawls on the surface of a ball of...

Hello, Is it correct to state that a mass in uniform circular motion has a constant DeBroglie wavelength because its angular momentum is constant? It seems to me that...

Is there some way of putting a pseudoscalar particle (the pion, say) and a fermion (the muon, say) in the same supersymmetric multiplet? An other thing... sometimes...

Classical Mechanics and Quantum Mechanics are examples of the general Hamilton-Poisson mechanics q' = {q,H}, (q' is the time derivative of q) p' = {p,H}, {q,p} = 1, (f,g) =...

I'd like to recommend a bit of summer reading from the good people at the Princeton U Press, entitled 'Mathematics in Nature.' Written by John A. Adams, Professor of...

"Eugene Stefanovich" wrote in message ... Oz wrote: Eugene Stefanovich writes ...

Hi all, I have a question about Faddeev-Popov quantization. In order to get rid of the duplicated copy caused by gauge transformation, we need to give a gauge fixing...

i didn't see this in the sci.physics FAQ (which is awesome, btw), so i'll just go ahead and ask: do photons, being energy, distort spacetime, and thus interact...

This is a mainly mathematical question, but I posted some physics-related questions right at the end. I am trying to understand how the product of 2 or more exponentials...

Atomic GR...? Let's assume we're approaching a "generic" neutral isolated atom in a midget nano-craft. We intend to measure Einstein's Law G_uv=T_uv as we tend into the...

Hiya all. I wonder if any of you could recommend a good book on computer simulations: real intro stuff (only know Fortran!), with a view to simulating social systems. I do...

Howdy, I've been wondering lately if pseudo-random number generators of computer science could occur naturally? I was thinking some processes like flows of liquids with...

Hi, lately, I have been trying to deconstruct orbifold models with one extra dimension i.e. S1/Z_2 models but I am running into a serious problem. Deconstruction is the...

Has the advent of Quantum Statistical Mechanics led to an uncontroversial resolution of the paradox of Maxwell's Demon? If so, what is the currently accepted solution? Vonny...

In the context of positive and negative energy fluxes in the vacuum region near the event horizon of a black hole, Davies, Ford & Roman, and others, have pointed out that,...

Any information besides the references to "Blomgren"? There is also a NASA paper "Parameters affecting electrostatic cooling". Blomgren says 30-60kv Nasa says 20kv !! any one...