Coupling Definition and 355 Threads

The strong coupling constant is given by a (E)= 12 PI/ (33 - 2NF) H [E^2 / LAMBDA^2 nf = number of quarks in pair production. Three questions: What is E the energy of? If there were more than six quarks how would this affect the strong coupling constant? If forces can be unified why...

I have three angular momenta l_1,l_2,l_3 which I want to couple into one big one: L\equiv l_1+l_2+l_3. Can I just do this by coupling l_1,l_2 into L' and then couple L',l_3 into L? I would guess that I could equally couple l_2,l_3 into L' and then couple l_1,L' into L and this would...

Last december I was asking for the possibility to couple the highest massive bosons to the nucleus. I was aiming for some kind of many body effect to give relevance to the total mass of the nucleus, besides the one of the independent nucleon. To get this, one expects the contribution of more...

I am looking for detailed information about the operating dynamics of viscous couplings. When I search on the web, all I end up with is automotive sites that are selling them, telling you how to diagnose/repair them or explain what they do in a car. I understand what they do. I understand...

Hi. I am trying to figure out how to couple two seperately driven shafts so that the speed of shaft B is always at X RPM greater than the speed of shaft A regardless of what speed A and B are driven at. (X is a constant, but the value depends on some still unfinished math, we will say 500 for...