Probability of Spin Polarization in Pair Production

In summary, the probability of two particles with spin 0 annihilating and their spin polarizations being in the same direction in a short time is 0. This is due to the conservation of angular momentum and the correlation function of the two particles being 1 at t=0. However, as time passes, the system becomes uncorrelated. This concept is relevant to entanglement.
  • #1
brodskya
1
0
Hi, I have a question which sounds like :
Particle with spin 0 annihilates in two particles with spin one. What is the probability their spin polarization will in the same direction in short time?

I think is 0 because of argument saving spin of the system and correlation function of two particle is 1 (it's correlated in t=0), but by the time the system will become be not correlated at all. Is my logic right ?
 
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  • #2
Conservation of angular momentum requires that their spins be in opposite directions unless they interact with another object.
 
  • #3
clem said:
Conservation of angular momentum requires that their spins be in opposite directions unless they interact with another object.

This is the basis for entanglement in part, so really it's fairly well established if you're into non-locality. (and who isn't lol. lol. *sigh*)
 

What is the concept of spin polarization in pair production?

Spin polarization refers to the alignment of the spin of a particle in a specific direction. In pair production, the spin polarization of the produced electron and positron can be affected by the polarization of the photon involved in the process.

How is the probability of spin polarization calculated in pair production?

The probability of spin polarization in pair production is calculated by taking the ratio of the number of produced electron and positron pairs with specific spin orientations to the total number of pairs produced.

What factors can influence the probability of spin polarization in pair production?

The probability of spin polarization in pair production can be influenced by the energy and polarization of the incoming photon, as well as the properties of the particles involved, such as their masses and spins.

Can the probability of spin polarization be experimentally measured?

Yes, the probability of spin polarization in pair production can be measured through experiments using high-energy particle accelerators. By analyzing the properties of the produced electron and positron pairs, scientists can determine the degree of spin polarization.

What are the potential applications of understanding the probability of spin polarization in pair production?

Understanding the probability of spin polarization in pair production can have implications in fields such as quantum physics and high-energy particle physics. It can also aid in the development of new technologies, such as spin-based quantum computing.

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