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Bridge between quantum mechanics and general theory of relativity still possible



  Bridge between quantum mechanics and general theory of relativity still possible
Experimental diagram for testing gravitation-induced decoherence of entanglement

Quantum mechanics and the general theory of relativity form the foundation of the present understanding of physics ̵

1; yet the two theories do not seem to work together. Physical phenomena are based on the movement relationship between observer and viewer. Certain rules apply to all kinds of observed objects and to all observing ones, but these rules tend to collapse at the quantum level where subatomic particles behave in a strange way.

An international research team developed a unified framework to explain this apparent collapse between classical and quantum physics and tested it with a quantum satellite called Micius. Her results, which precluded a version of her theory, she published on September 19 in Science .

Micius is part of a Chinese research project called Quantum Experiments at Space Scale (QUESS), in which researchers explore the relationship to quantum and classical physics through light experiments. In this study, researchers used the satellite to generate and measure two entangled particles of fundamental physics between quantum theory and gravity, "said Jian-Wei Pan, author and director of the CAS Center for Excellence in Quantum Information and Quantum Physics at the University of Science and Technology in China.

The theory was tested by Pan and the team that the particles would decorrelate from each other when they passed through separate gravitational regions of the Earth, and the different attractions would force a quantum interaction that would be like a classical relativism behaves – the particle in lesser gravity would move with less force than the particle in more gravity description of quantum fields, as they exist in the exotic spacetime, which contains closed time-like curves, and the ordinary spacetime, which is under general relativity Event formalism standardized behavior throughout quantum and classical physics.

"If we observed the deviation, it would mean that the event formalism is correct and we must fundamentally revise our understanding of the interplay of quantum theory and gravitational theory," said Pan. "In our experiment, however, we excluded the strong version of event formalism, but there are other versions that need testing."

The researchers saw no deviations between the particles and the expected interactions predicted by the quantum understanding of gravity They plan to test a version of their theory that allows for a bit more flexibility.

"We have excluded the strong version of event formalism, but a modified model remains an open question," said Pan.

To test this In this release, Pan and the team will launch a new satellite that has a 20 to 60 times higher orbit than Micius to test a wider field of gravity.


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Further information:
"Satellite Test of a Gravity-Induced Quantum Coherence Model" Science (2019). science.sciencemag.org/lookup/… 1126 / science.aay5820

Provided by
University of Science and Technology of China

Quote :
Bridge between Quantum Mechanics and General Theory of Relativity Still Possible (2019, September 19)
retrieved on September 19, 2019
from https://phys.org/news/2019-09-bridge-quantum-mechanics-relativity.html

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