Undergrad Could the emission of 2 gravitons in orbits possibly be supressed?

[Suekdccia]

TL;DR

Could the emission of 2 gravitons at the same time in orbits be possibly avoided or supressed?

As bodies orbit each other they emit gravitational waves (presumably by emitting gravitons). There could be configurations of several moons around a planet (for instance) where the quadrupole moment does not change and is invariant. However, there could still be higher order effects, namely two-graviton emission (analogous to "forbidden" electromagnetic transitions that still would happen, albeit with a much smaller probability)

Could the emission of 2 gravitons at the same time be possibly avoided or suppressed? Or perhaps compensated by other mechanism?

 

[pines-demon]

TL;DR Summary: Could the emission of 2 gravitons at the same time in orbits be possibly avoided or supressed?

As bodies orbit each other they emit gravitational waves (presumably by emitting gravitons). There could be configurations of several moons around a planet (for instance) where the quadrupole moment does not change and is invariant. However, there could still be higher order effects, namely two-graviton emission (analogous to "forbidden" electromagnetic transitions that still would happen, albeit with a much smaller probability)

Could the emission of 2 gravitons at the same time be possibly avoided or suppressed? Or perhaps compensated by other mechanism?

Under which model? We do not have a valid theory of quantum gravity yet.

 

[Suekdccia]

Under which model? We do not have a valid theory of quantum gravity yet.

are there any semi-classical approximations that we can use now (similar to how Hawking radiation is modeled despite not having a quantum theory of gravity)?

 

[PeterDonis]

are there any semi-classical approximations that we can use now (similar to how Hawking radiation is modeled despite not having a quantum theory of gravity)?

No.

 

[PeterDonis]

@Suekdccia you need to do the work yourself of finding out whether there is a model that can be used to answer your question, before asking it. That means taking the time to find specific references as the basis for your question. Given the number of threads you have started without doing this, we are getting to the point where you are going to start getting warnings instead of just reminders about giving a specific reference. Please take heed.

This thread is closed.