Physicists publish new theories exploring tandem gravity and quantum mechanics

Mondo Science Updated on 2024-01-26

**: IT House.

IT House reported on December 5 that modern physics is built on two pillars, one of which is quantum theory, which controls the smallest particles in the universe;The other is Einstein's general theory of relativity, which explains gravity by the curvature of space-time. However, the two theories contradict each other, and physicists have been trying to reconcile them for more than a century.

Physicists have also derived various hypotheses in the process of exploration, believing that Einstein's theory of gravity must be modified or "quantized" in order to adapt to quantum theory, and derived gravitational quantum theory, string theory, and ring quantum gravity.

Professor Jonathan Oppenheim of the Department of Physics and Astronomy at University College London has proposed a new theory, two related results published in Physical Review X (PRX).

The new theory, called the "postquantum theory of classical gravitation," unifies gravity and quantum mechanics while retaining Einstein's classical concept of space-time.

Before introducing the theory, IT House will first introduce Einstein's classic concept of space-time. According to Einstein, time is not an independent entity, but an accompaniment closely coupled to space, the so-called cosmic space-time.

In Einstein's general theory of relativity, space-time in the universe is a four-dimensional structure, in addition to the length, width and height of the third dimension, the fourth dimension is time, Einstein also proved that time is relative, and the speed of time passes in different environments, and even the time that everyone perceives is different.

This new theory argues that space-time may be classical and not governed by quantum theory. This theory modifies quantum theory by the internal collapse of the feasibility mediated by space-time itself.

This leads to random and violent fluctuations in space-time, which are larger than quantum theory envisions, and the apparent weight of an object is not possible if measured with sufficient precision.

The second article** was simultaneously published in Nature Communications led by Professor Oppenheim's former PhD student, who studied some of the consequences of the theory and proposed an experiment to test: measure the mass very precisely to see if its weight fluctuates over time.

For example, the French International Bureau of Weights and Measures usually weighs 1 kilogram of mass and uses this as the standard for 1 kilogram. If the measured fluctuation of this 1 kilogram mass is less than the fluctuation required for mathematical consistency, the theory can be ruled out.

It has been shown that if space-time does not have quantum properties, then there must be random fluctuations in the curvature of space-time, which have specific characteristics that can be verified experimentally.

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