Gravitational waves can reveal the existence of parallel universes

The existence of new dimensions outside the 3D universe has always been a big question for physicists. Gravitational waves may be the key to observing the effects of odd spatial dimensions.

The hidden dimensions of the universe can be the cause of ripples in 3D space by acting on gravitational waves, according to New Scientist. Physicists have long wondered why gravity is much weaker than other fundamental forces. One of the probable causes is the leakage of gravity out of the three dimensions of normal space that we observe.

Some theories seek to explain the gravity of gravity and quantum effects, including string theory with the appearance of gravity spreading through new dimensions. Finding evidence of such anomalous dimensions can help determine gravity, finding a way to combine gravity and quantum mechanics and explain the expansion of the universe.

However, finding the existence of new dimensions is not easy. All signs if existed are so subtle that they do not cause any disturbance to our daily lives. Until now, there has not been any evidence of physical signs outside - 4-way time.

Gravitational waves generated by the merger of two black holes hide information about new dimensions.(Photo: SXS).

However, in the last two years, a new possibility emerged. Gravitational waves, ripples in time - space caused by the movement of super black holes were first discovered in 2015. Because gravity is the only force that can occupy all the dimensions they exist, gravitational waves are particularly promising objects to detect any dimension beyond our current understanding.

"If there are more dimensions of space in the universe, gravitational waves can follow any direction," said Gustavo Lucena Gómez, of the Max Planck Institute of Attractive Physics in Potsdam, Germany.

Lucena Gomeez and colleague David Andriot successfully calculated the influence of the new spatial dimensions on the gravitational waves that we observed in three-dimensional space. The results show that two special effects appear on gravitational waves when new dimensions are added: strange waves at high frequencies and elasticities of gravitational waves change in space.

When gravitational waves propagate through a known 3D dimension, they create a "tower" of gravitational waves at high frequencies next to regular regular distributions. However, the current observation stations cannot detect gravitational waves at high frequencies, and most of the observation stations built in the near future also focus on the low-frequency region.

The second effect of the new spatial dimensions has more opportunities to be discovered because it changes the gravitational waves we observe instead of producing extra waves at high frequencies.

"If other spaces are in our universe, this will dilate or narrow down - the current time in a different way that conventional gravitational waves will never do," Lucena Gomez said. know.

When gravitational waves propagate through space, they expand and narrow the space in a very specific way. It is like pulling a rubber band: the ellipse is formed by one side being stretched longer and one side is pulled less, and then returning to its original shape when you stop pulling.

However, the new dimensions will create another way for gravitational waves to change the shape of space, called "breathing" mode. This phenomenon is similar to your lungs when breathing, space expands and contracts when gravity waves pass through, in addition to being as long as always.

"With more detectors, we will be able to see if breathing mode is going on," Lucena Gomez said.

Emilian Dudas, a scientist at the French Polytechnic University, also argued that gravity could be the key to finding new dimensions of space such as the parallel universe."It may not be the only sign, but it will be a very interesting thing," Dudas said.