Starting in the 1980s, scientists playing
with pairs of particles in Paris, Geneva and Austria found behaviors beyond Bell's limit.
The idea works this way: In quantum communication, two users directly share
pairs of particles in a so - called entangled state, meaning their quantum properties are linked.
So - called Hawking radiation, dreamed up in the 1970s, is a consequence of quantum theory, which says that a vacuum is not empty but fizzes with
fleeting pairs of particles and their antimatter counterparts.
But something special occurs
when pairs of particles emerge near the event horizon — the boundary between a black hole, whose gravity is so strong that it warps space - time, and the rest of the Universe.
This Star Trek — like feat is possible because of a phenomenon called entanglement, in
which pairs of particles become linked in such a way that measuring a certain property of one instantly determines the same property for the other, even if separated by large distances.
Bell homed in on the expected correlations of spin measurements when
shooting pairs of particles through the device, while the detectors on either side were oriented at various angles.
But analysis of the data revealed something odd: the paths of
certain pairs of particles flung out after the collisions seemed to be linked in unexpected ways.
To find these perfect glasses, the researchers» model considered 2 -, 3 -, and 4 - body interactions, which refer to the interactions between the number of particles, whereas previous models considered only 2 - body interactions, or interactions
between pairs of particles.
This is a consequence of quantum theory, which says that a vacuum is not truly empty, but fizzes with
fleeting pairs of particles and their antimatter counterparts.
So peeved was Einstein that he and his friends came up with a thought experiment to show how it was possible to learn both the positions and momentums
of pairs of particles.
Empty space is instead filled
with pairs of particles and antiparticles, called virtual particles, that quickly form and then, in accordance with the law of energy conservation, annihilate each other in about 10 - 25 second.
When pairs of particles and antiparticles spawn near a black hole's event horizon, each pair shares a connection called entanglement.
As was explained in the previous section of the paper, under the right conditions, one can even make this choice after
the pair of particles being considered have ceased to interact.
Stapp's thesis is quite compatible with its being determined experimentally that changes in the orientation of the spin - measuring device applied to one member of such
a pair of particles have no significant effect upon the statistical make - up of spin - measurement results for the second member of such particle pairs.
According to quantum mechanics, fleeting
pairs of particles and antiparticles are constantly appearing out of empty space, only to annihilate and disappear in the blink of an eye.
Even in empty space,
pairs of particles — one made of matter, the other antimatter — can pop into existence for an instant, before annihilating each other and disappearing.
The EPR authors described a source, such as a radioactive nucleus, that shot out
pairs of particles with the same speed but in opposite directions.
Bell had assumed that the spins of
every pair of particles would be measured, every time a new pair was shot out from the source.
Hawking realized that if
a pair of particles from the vacuum popped into existence straddling the black hole's boundary then one particle could fly into space, while the other would fall into the black hole.
What makes this possible is a bizarre phenomenon known as entanglement, in which
a pair of particles have complementary characteristics, such as two electrons spinning in opposite directions.
(The Higgs was assumed to decay into
a pair of particles known as a bottom quark and an antibottom quark.)
In one case they made two different arrangements of the same three
pairs of particles of different sizes, producing products with different optical properties.
Physicists have performed the first full simulation of a high - energy physics experiment — the creation of
pairs of particles and their antiparticles — on a quantum computer.
According to quantum physics,
pairs of particles must appear out of quantum fluctuations just outside the event horizon — the black hole's point of no return.
The quantum state is shared among the various objects — usually
a pair of particles.