/sci/ - Science & Math

What, exactly, causes the fundamental forces? Or, why do they exist? Hell, why does anything exist?

>>8705307
I don't hate it. there are ppl in the field that write accessible books for those in the field or interested in the field, and other who write in a way so every single person can understand. With ultimate accessibility you sacrifice the minutiae to understand most scientific concepts. Also many scientists read primary lit. and popsci does nothing for them. It's like shooting dope vs popping percs.

How do they work?

As far as I understand the three quantum forces, if Particle A and Particle B are interacting then A will send out a boson which B will absorb and so B's momentum will be changed causing motion. Now if momentum is equal to mass times velocity then the momentum of a photon should be 0 since its rest mass is 0 and as far as I understand it shouldn't have any other type of mass since mass is an emergent property of confined particles, therefore the overall momentum change for particles undergoing Electromagnetism should be 0 and nothing should move due to that force. Or does the photon being absorbed confine it and add to the mass of the receptor particle and therefore change its momentum?

Also what causes particles to send bosons to each other? How do they know if something is within their range and to interact according to the forces?

Is there a fifth fundamental force?