# Is there a path to go from GR, to Gravitational Waves, to Gravitational Particles (Gravitons), to Quantum Gravity?

The articles on the subject often say : a part of the mass of the 2 celestial bodies became energy for gravitational waves after merging : E(gravitational waves) = (M1 + M2 - M_merged).c^2

Intuitively I want to say that because there's a gravitational wave, there's a gravitational particle.

The rationale is that if gravitational waves are not quantised, then that would mean every body of mass is losing a little bit of mass all the time by generating arbitrarily small gravitational waves.

If I'm correct GR and QM can be unified. Please teach me where I'm wrong.

Related unanswered question: Energy Conversion from Mass to Gravitational Wave

• I don't think that you want to say that intuitively. You want to say that because you have heard many other people say that before you and your brain is evolved to repeat things it has heard before. In this case that's a bad strategy as the literature on failed attempts to quantize gravity in the weak field (linearized gravitational wave) limit will tell you. As a counterexample... where are the quantum theory versions of ocean waves or acoustic waves in gases? Shouldn't they exist? Why do they not exist? Commented Feb 25, 2016 at 23:46
• Thank you. Is the conclusion that there's indeed a wave, that's carrying energy, but not in a quantified way and rather like a wave in the ocean ? I think you just taught me that I must learn more about the physics of fields. Commented Feb 25, 2016 at 23:54
• We do know that there is a classical wave-like behavior. We also do know that this, in itself, is not enough to formulate a quantum theory. That, of course, doesn't mean that one doesn't have to try and many really smart people tried really hard. The naive attempts have failed, now we have some less naive ones with string theory and loop quantum gravity. Either may still be missing the actual situation, or, better, they may be misjudging it. There may be another layer between a quantum theory of gravity and the large scale gravity that we are observing. I would keep an open mind about that. Commented Feb 26, 2016 at 0:01
• Thanks for the insight. Now I would like to ask specifically if by moving around I'm generating gravity waves and if so am I losing mass. Should I ask another question ? Commented Feb 26, 2016 at 0:06
• The energy that is radiated away does not come from the mass of the objects, but rather from the energy of the bound system, including their motion. There are many issues standing in the way of a quantum theory; there are no easy answers. Commented Feb 26, 2016 at 3:07