3 comments
so many great PBS Space Time on this concept<p>* <a href="https://www.youtube.com/@pbsspacetime/search?query=graviton" rel="nofollow">https://www.youtube.com/@pbsspacetime/search?query=graviton</a>
So do we finally have one unified theory or are we still none the wiser?
From the article: "The result does not unite quantum mechanics and gravity, nor does it show that gravity itself is quantum".<p>I must say, it's actually quite refreshing to read an article about a science topic that conveys the caveats and limitations of the study. Far too many of these studies get filtered through the news outlet hype-machine
The article says that this proves that Einstein's equivalence principle (resulting in relativity) holds in this test of a falling quantum particle (where gravity results in a phase shift in the quantum state).<p>It doesn't show/prove how general relativity and quantum mechanics interact.<p>NOTE: The Dirac equation and Quantum Electro Dynamics (QED) unify quantum mechanics and special relativity (non-accelerating frames of reference).<p>So the remaining piece is either to extend QED/QCD to accelerating frames of reference or to quantize general relativity. That would likely predict the phase shift observed in this experiment.
There is a GREAT, accessible video about this experiment here:<p><a href="https://www.youtube.com/watch?v=CfjnTJos_no" rel="nofollow">https://www.youtube.com/watch?v=CfjnTJos_no</a>