Gravity Between Photons: Exploring the Possibility

[johann1301]

Is there gravity between two photons?

 

[PeterDonis]

If they are not moving in the same direction, yes. See this post from a previous PF thread:

https://www.physicsforums.com/showpost.php?p=4824743&postcount=12

 

[johann1301]

Thanks!

 

[dextercioby]

There's also an argument in Zee's QFT book, pages 427-428.

 

[sardar]

I would say that the concept of gravity between two photons is currently a topic of much debate and exploration in the scientific community. While photons do not have mass, which is a requirement for the traditional understanding of gravity, there are theories and experiments that suggest the presence of a gravitational interaction between photons.

One such theory is the concept of virtual particles, which are particles that are constantly popping in and out of existence in the quantum vacuum. These virtual particles can interact with photons and potentially create a gravitational pull between them. Additionally, some experiments have shown that photons can be affected by the curvature of space-time, which is a key component of gravity.

However, there is still much research and experimentation needed to fully understand the potential for gravity between photons. It is important to approach this topic with caution and continue to gather evidence and data before drawing any conclusions. Only through rigorous scientific investigation can we truly determine the existence and nature of a gravitational interaction between photons.