Raymond wrote: ↑June 24th, 2022, 3:48 pm Hi there! About the energy-momentum vector of the virtual photon. The components have independent values in the sense they don't obey the energy-momentum relation. They are off-shell and as such ideal to couple to. They can deliver each energy and momentum, in order to secure energy and momentum conservation. Virtual particles are thought to shortly appear and disappear but they are always present, going back and forth in time at the same time.Ok, I see.
It's the enormous multitude of paths and interactions that gives rise to a multitude of integrals and integrals of them (functionals).
What are you doing with black hole entropy? How is QFT involved here? AdS/CFT, so zcFT?
I'm not doing anything with BH entropy right now, I wrote a term paper reviewing BH thermo for a class though and have just found it interesting. To really understand things like the Unruh effect, it generally requires QFT. At the time I wrote the paper I had to just gloss over the details Unruh effect/Hawking radiation.
My thesis research is on galaxy quiescence, but I've worked on constraining dark energy right before starting that. It's conceivable that I'll still need to dive deeper into QFT if I do more cosmology research. The line between astrophysics and cosmology gets really thin when doing what I've been doing.
--Richard Feynman