Mar 28, 2022 05:53 PM
(This post was last modified: Mar 28, 2022 05:54 PM by C C.)
http://backreaction.blogspot.com/2022/03...stein.html
EXCERPTS: . . . General Relativity is now more than a century old, and so far its predictions have all held up. [...] The most important reason physicists think that general relativity must be wrong is that it doesn’t work together with quantum mechanics...
[...] one of the ways to prove Einstein wrong is to bring more massive objects into quantum superpositions and then measure their gravitational field. If the gravitational field is also in a quantum superposition, then that means general relativity is out and Einstein wrong. This avenue is pursued for example by the group of Markus Aspelmeyer in Vienna.
[...] What would it be good for to prove Einstein wrong? Well, first of all it would give us experimental guidance to develop a theory of quantum gravity, and that could help us understand the quantum properties of space and time, as well as what’s inside black holes or what happened at the big bang.
Many physicists also hope that it will shed light on other puzzles, such as dark matter and dark energy, or explain some nagging anomalous observations in cosmology, like the presence of too many large structures in the universe, which we talked about in an earlier video, or that different measurement of the Hubble rate don’t give the same results.
Personally I think the most promising way to prove Einstein wrong is the approach pursued by the group of Aspelmeyer. And if they succeed they’ll almost certainly win a Nobel Prize. But it’s quite possible that in the end the breakthrough will happen in a way that no one saw coming... (MORE - missing details)
https://youtu.be/Bo4al7sNPkE
https://www.youtube-nocookie.com/embed/Bo4al7sNPkE
EXCERPTS: . . . General Relativity is now more than a century old, and so far its predictions have all held up. [...] The most important reason physicists think that general relativity must be wrong is that it doesn’t work together with quantum mechanics...
[...] one of the ways to prove Einstein wrong is to bring more massive objects into quantum superpositions and then measure their gravitational field. If the gravitational field is also in a quantum superposition, then that means general relativity is out and Einstein wrong. This avenue is pursued for example by the group of Markus Aspelmeyer in Vienna.
[...] What would it be good for to prove Einstein wrong? Well, first of all it would give us experimental guidance to develop a theory of quantum gravity, and that could help us understand the quantum properties of space and time, as well as what’s inside black holes or what happened at the big bang.
Many physicists also hope that it will shed light on other puzzles, such as dark matter and dark energy, or explain some nagging anomalous observations in cosmology, like the presence of too many large structures in the universe, which we talked about in an earlier video, or that different measurement of the Hubble rate don’t give the same results.
Personally I think the most promising way to prove Einstein wrong is the approach pursued by the group of Aspelmeyer. And if they succeed they’ll almost certainly win a Nobel Prize. But it’s quite possible that in the end the breakthrough will happen in a way that no one saw coming... (MORE - missing details)
https://youtu.be/Bo4al7sNPkE
