Hi everybody!
I am wondering, among other things, whether the Special Relativity relationship E = p for a photon (I am using c = 1 units ) is still valid in General Relativity.
Let me explain my question in detail. By applying the null geodesic condition with a diagonal metric, we obtain...
Hi everybody!
I kindly request your help. I have to compute functions like
\frac{ \sin (r x) - r x \cos (r x)}{r^3}
(primitive function of x sin(rx) )
or
\frac{ -r x (120 - 20 r^2 x^2 + r^4 x^4) cos(r x) +
5 (24 - 12 r^2 x^2 + r^4 x^4) \sin(r x)}{r^7}
(primitive function of x^5 sin(rx) )...
Hi everybody!
I kindly request your help in optimizing the numerical integration of the following expression:
\xi (r)=\frac{1}{2\pi ^2}\int_{-\infty}^{\infty}f(k)\cdot \sin(k\cdot r)\cdot dk
f(k) vanishes outside the boundaries k=0 and k=2; I have got k and f(k) as float arrays, so we...
Localization vs De Broglie wavelength
First of all, I would like to say hello to everybody since this is my first post, even if it's been some time since I read Physics Forums.
Second, sorry for my bad English, I'm Italian :)
Third, the issue:
I read from my teacher's notes, that a...