Register to reply 
Interaction of Particles 
Share this thread: 
#1
Apr2914, 01:45 AM

P: 22

When we describe the amplitude of two interacting particles, we are integrating w.r.t the relative momentum of the particles. Why we do this?
Thank you all of you. 


#2
Apr2914, 02:24 AM

Homework
Sci Advisor
HW Helper
Thanks
P: 12,876

Because that is how you work it out.
Did you have another way in mind? 


#3
Apr2914, 03:14 AM

P: 904

Because you integrate over the propagator momentum transfer... the propagator will propagate the momentum from one particle to the other, but its momentum transfer q can take any value....
So you integrate over it to take all possible momenta?? Maybe I;m wrong, without seeing the actual formula... 


Register to reply 
Related Discussions  
Interaction of particles  High Energy, Nuclear, Particle Physics  8  
Interaction between wavefunction of two particles  Quantum Physics  16  
Hydrodynamic interaction of particles  Advanced Physics Homework  1  
The interaction between two electriferous particles  Special & General Relativity  10  
Light's interaction with particles...  Chemistry  4 