Anyone agreeing that physicsoverflow.com has been losing momentum should consider following and rating on some example questions at the new physics SE 2.0 proposal site. With enoug …

Firstly is there an intuitive argument to see why the chemical potential of a system of free bosons should be negative and why for free fermions at high temperatures the chemical p …

I ask because i once read that black holes radiate infrared waves. Is this true? If not, then it could absorb some of the infrared waves from a colder object, perhaps one orbiting …

Hi all! A question I've had for a while: On the surface of the Moon, while under direct sun radiation, is there any way of cooling up an object? There appears to be no natural sh …

Admin, could you put this site in bootstrap mode? It would be very helpful.

Unfortunately physicsoverflow is quite unused. The framework it is based on, StackExchange, is curently updated to version 2.0 and all rather inactive site, possibly including this …

Sometimes I see Maxwell's equations in the vacuum written as BOX A_u = 0 where BOX is the d'Alembertian operator. http://en.wikipedia.org/wiki/Maxwell%27s_equations#Four-potential …

Please commit to the Physics proposal on Area 51. This site is going to shutdown who knows when, but they will probably be shutting it down without further warning. So please commi …

To date, what is the most mathematically precise formulation of the AdS/CFT correspondence, and what are the most robust tests of the conjecture?

The resistivity for thin films can be obtained using Fuchs theory \rho = \left[1-\left(\frac{3}{2\kappa}\right)(1-p)\int_1^\infty\left(\frac{1}{t^3}-\frac{1}{t^5}\right)\frac{1-\ex …

How to compute the path integral in Chen-Simons theory?(the one Witten used to explain Jone polynomial)? Is there any measure in there? Thanks!

Do we know the answer s to some or all of these equations? 1.) The radius from the center of a nuclear to the different possible orbit of the electrons 2.) The velocity of a proto …

When a body moves aren't we supposed to say that each particles on the body moves with same velocity and so the de-broglie wave corresponding to each particle must have the same ve …

Hi, i'm new but i cannot found out how to solve this problem. I can solve it with an asymetric gauge (obtaining Landau levels) but cannot solve the ODE of the Hamiltonian in a symm …

Let's say you have an electron wave that hits something and let's assume the wave does not collapse to an electron and collide with that something. Is the amount of momentum transf …