I Can two photons combine to give a local field with spin 2?

  • I
  • Thread starter Thread starter south
  • Start date Start date
  • Tags Tags
    Photons Spin
south
Messages
91
Reaction score
20
TL;DR Summary
Can two photons combine to give a local field with spin 2
Can two photons combine to give a local field with spin 2
 
Physics news on Phys.org
No. They cannot. There is no direct photon-photon interaction, nor a photon-photon bound state (similar to a hydrogen atom, for example).
 
Thank you very much dextercioby for attend me. Best regards.
 
dextercioby said:
No. They cannot. There is no direct photon-photon interaction, nor a photon-photon bound state (similar to a hydrogen atom, for example).
What about up conversion? (Opposite of down conversion). Admittedly I don’t know much about that other than the name.
 

Thread 'The Power of QM and QFT'

We often see discussions about what QM and QFT mean, but hardly anything on just how fundamental they are to much of physics. To rectify that, see the following; https://www.cambridge.org/engage/api-gateway/coe/assets/orp/resource/item/66a6a6005101a2ffa86cdd48/original/a-derivation-of-maxwell-s-equations-from-first-principles.pdf 'Somewhat magically, if one then applies local gauge invariance to the Dirac Lagrangian, a field appears, and from this field it is possible to derive Maxwell’s...
View full post »

Thread 'Importance of Hanbury Brown and Twiss experiment'

I read Hanbury Brown and Twiss's experiment is using one beam but split into two to test their correlation. It said the traditional correlation test were using two beams........ This confused me, sorry. All the correlation tests I learnt such as Stern-Gerlash are using one beam? (Sorry if I am wrong) I was also told traditional interferometers are concerning about amplitude but Hanbury Brown and Twiss were concerning about intensity? Isn't the square of amplitude is the intensity? Please...
View full post »

Thread 'Prof Mike Wiest's proposed link between quantum and consciousness'

I am not sure if this belongs in the biology section, but it appears more of a quantum physics question. Mike Wiest, Associate Professor of Neuroscience at Wellesley College in the US. In 2024 he published the results of an experiment on anaesthesia which purported to point to a role of quantum processes in consciousness; here is a popular exposition: https://neurosciencenews.com/quantum-process-consciousness-27624/ As my expertise in neuroscience doesn't reach up to an ant's ear...
View full post »

Similar threads

I Why can’t photons “pile up” to eject an electron?
Replies
3
Views
212
A Coleman: "Spin is a concept that applies only to particles with mass"
Replies
11
Views
1K
I Is the photon field a vector field and a gauge field?
Replies
6
Views
2K
B Polarization of a single photon
Replies
10
Views
4K
I Polarization of photons quantum mechanically
Replies
3
Views
2K
I Bell tests: Changing detector settings "just before photon arrives"
Replies
4
Views
1K
I Can an electron in a magnetic field radiate a virtual photon?
Replies
3
Views
1K
A Relationship between Larmor precession and energy eigenstates
Replies
15
Views
3K
B Is the photon a gauge boson for neutrinos?
Replies
20
Views
2K
I Simulation of CHSH inequality experiment in Excel
2
Replies
61
Views
4K

Hot Threads

Recent Insights

Back
Top