In 1935 the Austrian physicist Erwin Schrodinger came up with one of the best known thought experiments of all time. You will probably be aware of it, but imagine a cat in a sealed box, containing a source of poison that has a 50 per cent chance of being released.
When you open the box, you will know if the cat is alive or dead. But beforehand? The theory is that it is in an indeterminate state, simultaneously dead and alive, and that this state is mirrored at the sub-atomic, quantum level. Objects can be both a wave and a particle, until observed, when their true state is known.
No weirder than other ideas in quantum physics. But this does not apply at the macro level, in the everyday world, because the indeterminacy disappears through interreactions with other particles, a process known as decoherence. (Apologies to genuine physicists, I am doing my best.)
Now studies by a number of academics just published have suggested that this is down to one effect of general relativity, time dilation caused by gravity waves. The closer an object is to another with a significant mass, the slower time runs. In an imperceptible way, almost undetectable. But an object in orbit around the Earth will see time running faster than one at sea level.
This has an effect at the atomic level, and destroys that indeterminate effect manifested at the quantum level.
Clear enough? Here comes the problem. I have read two popular reports on this, and on the implications for Schrodinger’s cat. One is titled “General relativity explains why Schrodinger’s cat is alive.” The other: “Research suggests gravity destroys Schrodinger’s cat.”
How two writers can come to the opposite conclusion from the same research is beyond me. This is where we came in, though. The cat is still both alive and dead.