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Marilyn67
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- TL;DR Summary
- GBAR experiment at CERN
What consequences in the event of unexpected results ?
Hello,
My question concerns the (improbable but possible...?) results of the GBAR experiment at CERN which should resume in May 2021, according to my latest information. (delay due to Covid 19).
Most scientists (and me too) believe that antimatter behaves the same as matter in a gravity field. (principle of equivalence of General Relativity).
However, today a slight doubt remains, and the experiment aims to eliminate this doubt.
My question is the following :
If the experiment were to reveal that antimatter behaves in an inverse manner to matter in a field of gravity (repulsion), what would be the repercussions in General Relativity in particular, and all physics in general ?
I take the (extreme) example of the black hole.
No (classic) information can escape the black hole, once the horizon has been crossed.
(I leave aside the Hawking radiation which is quantum in nature).
If antimatter actually behaves in the opposite way, it would be “pushed back” by the black hole and could “escape” from it.
(That couldn't even get into it).
One can imagine an observer having crossed the horizon who uses gamma rays projected on a target, to create pairs of particles - antiparticles, in order to send a message below the horizon, which is in contradiction with the fact that no "classic" information won't escape from a black hole. (ejection of antimatter).
We would be dealing with a “half-naked” singularity. (if I may say so).
What would be the consequences on our current knowledge?
1 / At the level of General Relativity ?
Would it become false?
2 / At the level of Physics in general and the principle of causality?
(for an observer who has crossed the horizon, the exterior corresponds to the "past", and it no longer interferes with it) :
Here, he could do it with a "flow" of antimatter particles in the form of bits (0,1,) and violate the principle of causality?
I'm not sure my question is well put.
In advance, thank you for your answers, as usual, very relevant.
Marilyn,
My question concerns the (improbable but possible...?) results of the GBAR experiment at CERN which should resume in May 2021, according to my latest information. (delay due to Covid 19).
Most scientists (and me too) believe that antimatter behaves the same as matter in a gravity field. (principle of equivalence of General Relativity).
However, today a slight doubt remains, and the experiment aims to eliminate this doubt.
My question is the following :
If the experiment were to reveal that antimatter behaves in an inverse manner to matter in a field of gravity (repulsion), what would be the repercussions in General Relativity in particular, and all physics in general ?
I take the (extreme) example of the black hole.
No (classic) information can escape the black hole, once the horizon has been crossed.
(I leave aside the Hawking radiation which is quantum in nature).
If antimatter actually behaves in the opposite way, it would be “pushed back” by the black hole and could “escape” from it.
(That couldn't even get into it).
One can imagine an observer having crossed the horizon who uses gamma rays projected on a target, to create pairs of particles - antiparticles, in order to send a message below the horizon, which is in contradiction with the fact that no "classic" information won't escape from a black hole. (ejection of antimatter).
We would be dealing with a “half-naked” singularity. (if I may say so).
What would be the consequences on our current knowledge?
1 / At the level of General Relativity ?
Would it become false?
2 / At the level of Physics in general and the principle of causality?
(for an observer who has crossed the horizon, the exterior corresponds to the "past", and it no longer interferes with it) :
Here, he could do it with a "flow" of antimatter particles in the form of bits (0,1,) and violate the principle of causality?
I'm not sure my question is well put.
In advance, thank you for your answers, as usual, very relevant.
Marilyn,