Recent content by debilo

Great, thanks !

Hello, I have a simple question : are there, today, practical applications of qft (elsewhere than in particle physics) ? By applications, I mean, did we design stuff with the help of this theory ? Thanks !

I finally found a solution it's ok !

Hello ! I want to solve the 3D Poisson equation using spherical coordinates and spherical harmonics. First I must solve this : ##d^2\phi/dr^2 + 1/rd\phi/dr - l*(l+1)/r^2 = \rho (r)## with ##\phi (\infty ) = 0## (here ##\phi## is the gravitationnal potential and ##\rho## is the mass density)...

Hello, thank you for your answer. I really don't know how to do these things. I had a new idea. Instead of solving the Poisson equation I consider that each point of my grid is Dirac-mass and I calculate the potential on the whole space using the well-known formula : $$V(r)=\sum...

Hello, I want to study the trajectory of planets (considered as points) around a body with arbitrary geometry (cube,...). I would like to restrict the simulation to a 2D plane, which would be a plane of symmetry of the 3D object (for example a plane that would cut the cube into two equal...