If we live in the dark things of an ocean, this tiny mirror may be able to detect it


A membrane mechanical resonator that acts as the test mass of the proposed dark photon accelerometer.

A membrane mechanical resonator that acts as the test mass of the proposed dark photon accelerometer.
Fig: Aman Agarwal

Despite huge and costly efforts to detect invisible things that seem to be present in most parts of the universe, none of the proposed dark matter has been detected by any scientific experiment. Now, a team of researchers has suggested a design to test a new dark matter, relying on an ultra-thin mirror and aiming to detect something called a dark photon.

Research, Published Earlier this year The Physical Review has described in the journal Letters a coin-sized accelerometer that, theoretically, would be able to measure the presence of tiny particles that could not be seen by older experiments. Work follows on a Previous paper By the same team published last summer.

The theoretical particles they are hoping to find are called dark photons. They are not confused with photons of light. “Like photons, they are represented by the equivalent of electromagnetic fields,” said Jack Manley, lead author of the new paper and a quantum optics researcher at Swati Singh’s lab at the University of Delaware. “However, unlike photons, dark photons have mass. This property makes them candidates for the dark. “

There may be many dark things hidden in the center of our Milky Way galaxy.

There may be many dark things hidden in the center of our Milky Way galaxy.
Fig: NASA / JPL-Caltech

The two papers traced the signatures of different types of dark matter; Basically, physicists think that different ways can offer smoothness in real things. Co-author Swati Singh says, “Both papers consider the possibility that our galaxy has millions of times lighter particles than electrons floating in the ocean, and the particles still detected make up all the dark matter,” said co-author Swati Singh, Delaware. University quantum optics theorist. “However, there is a fundamental difference between what such particles are and how they interact with common things.”

Physicists are looking for something to name their “dark matter” because when they look into the cosmic field they see gravitational effects that imply that much more is present than the regular matter we can detect. Therefore, they believe that some of the “darkness” in our current technologies must disappear – accounting for all that extra gravity. One theory of dark matter is that things known as action are responsible for the observable gravitational effects of invisible matter. (A.) Recent suggestions Assuming that such axes can go out of existence in the mysterious cores of neutron stars. Something Long-term candidates Larger particles or WIMPs are weakly known as interactions. Yet another idea is that darkness can be explained by matter Petite black holes in the primitive universe. All of these different ideas for how dark matter is exposed and where it resides bring ideas about how we can detect it.

The lion explained that there is huge uncertainty about densely packed dark matter. The value of a squirrel for almost every size on Earth is dark, he said; The question is not how dark matter is, but that dark matter is actually concentrated in a squirrel-sized mass that distributes evenly across Earth-sized masses into a very fine particle of smoke.

The team’s proposal is a coin-sized, 100-nanometer-thick card made with a silicone nitride membrane and beryllium mirrors. The materials are highly sensitive and when light bounces between surfaces, the detector will be able to measure if the distance between the mirror and the membrane changes at all; This indicates that something has separated them – an indication of new physics. Like a tuning fork, the team’s device can be set to “listen” for darkness at a certain frequency. These detectives can be set in different channels (frequencies) to keep an eye out for each darkness if lots are made; If no results come in a certain amount, they can just keep channel surfing.

The dark matter could easily spread to the entire universe, including the Galaxy M101 here.

The dark matter can only scatter the entire universe, including the Galaxy M101 here.
Fig: NASA / JPL / Caltech

The device is scalable and affordable, away from more traditional thematic dark matter detector layouts that need things like One ton of xenon buried at the foot of the hill. In fact, the design of the team will be tabletop, although you may not immediately understand

“We mean an optical table, which usually sits on pneumatic legs that detach it from the earth like a luxury car suspension,” said co-author Dalziel Wilson, a quantum optics experimenter at the University of Arizona. “If it’s not good enough – which it won’t be – then we need to create another suspension system at the top of the table. And another one, and so on. “The better the detector is suspended (it may be closer to free-fall), the better the results can be cut through the noise of the perennial activity. A call-to-arms to similar groups working on an accuracy measuring device for.

Singh estimated that experimental runs with detectors could be effective in about five years. Can any dark matter be found in these pint-sized sensors? Okay, no one yet. Even a null result tells physicians what a dark matter it is No.Which will help refine future searches.

More: What is Dark Matter and why has no one found it yet?



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