An book from the late 1970's by H. Stephani on general relativity says that "a deeper understanding of the physical and geometrical meaning of nontrivial Killing tensors and...

Applications are invited for admission to AGSoS, Aarhus Graduate School of Science, at the University of Aarhus. A few AGSoS scholarships and a number of fully funded...

Greetings! I seem to recall reading somewhere a quotation by Dirac describing the mystery of the phase of the wavefunction in quantum mechanics. Alas, I cannot find it now....

Recently I have met with an opinion expressed by several climate scientists which I would like to discuss with physicists and would be most appreciative of any...

I recall reading a few years ago about an experiment(simulation?) in which a (sound?) wave emanating from a single source inside a cavity was scattered not just on the...

If I understand correctly, the temperature and (more obviously) frequency of CMB radiation, is inversely proportional to 1 + z, where z is its redshift. However, I am not so...

I'm trying to wade through the treatment of the subject header's issue by De Pietri et al. whose series , , uncovered the surprisingly subtle nature of the problem. The...

I have recently begun research in tunneling in quantum dots. It's a new area for me (I am coming from nonlinear dynamics and chaos research) and I can see that I have a...

I have some question about broken symmetries. I am more familiar with its guises in solid state physics than in HEP, so I shall elaborate on the points that are unclear to me...

Now it is not clear, how an angular momentum is distributed over a circularly polarized light beam. According to the standard electrodynamics, it is concentrated exclusively...

The following is based on an article I posted a while back in the sci.physics thread ? where did the big bang start??, and includes some minor corrections and with a major...

From: "Jonathan Thornburg " Subject: slowness (was: The Galilean Limit of GR and 2 Forms of ADM) Newsgroups:...

Just curious. When I get a couple of powerful Neodymium magnets and push them together with same poles facing each other I get a null point over a small volume between...

Consider the lattice L of propositions/subspaces of Hilbert space H. As per The Logic of Quantum Mechanics, E.Beltrametti and G.Cassinelli, Addison-Wesley 1981, ISBN...

Greetings! Wigner's famous proof regarding the symmetries of a quantum logic starts with the assertion that only the modulus of the inner product, |x,y|, is measurable. ...

Any updates on the tech? Last I heard was that their Navy contract was renewed and all went quiet. The latest, as far as I can tell, is the wiki...

Imagine a coherent source of electrons. The intensity is small enough that we can consider the number of electrons going through a "double- slit" (Young's experiment) and...

I note that, at http://en.wikipedia.org/wiki/Nuclear_force the strong nuclear force (now re-christened nuclear force or residual strong force) is currently illustrated as a...

On 18 nov, 07:16, Ulf Klein wrote: Hi, This post concerns the relation between quantum mechanics and classical mechanics. One can find many...

Hi! Please, I understand that in experimental free expansion, a temperature difference in the gas expanded has been found. Does anyone know of a reference to these...