A group of scientists from Nanjing University, working with two partners from the University of Science and Technology of China, has led a new trial of the chameleon hypothesis and reported an inability to track down any proof of a fifth power. They have published their paper in the journal Nature Physics.
Earlier examination has proposed that there is a strange power following up on the universe—named by hypothetical physicists as “dim energy,” it was guessed as a method for making sense of why the universe is growing at a fast rate. In spite of much exertion, nobody has had the option to demonstrate that dim energy exists. One hypothesis, called the chameleon hypothesis, proposes that items impacted by gravity can act in manners that vary in view of the elements in their current circumstance. The hypothesis incorporates the possibility of a chameleon field as a fifth power. The hypothesis has been controversial on the grounds that it straightforwardly goes against the hypothesis of general relativity, which states that gravitational powers are supposed to be steady.
In this new experiment, the scientists looked to either demonstrate or negate the hypothesis by utilizing a suspended power sensor — a wheel-molded gadget with plastic blades joined to it that twists past a slim film sitting on an attractively suspended piece of graphite. The base beneath the graphite is held up with springs. The objective is to test the possibility that gravity applies varying measures of power contingent upon the thickness of items in its area. For example, in a huge setting, the chameleon field would apply less power in a thick climate, for example, on a singular planet, than it would over an enormous, less thick area of room. In the event that a fifth power exists, the turning films ought to apply an occasional power to the suspending film.
Subsequent to running the trial on various occasions, the scientists neglected to find any proof of the turning blades affecting the suspended film, which, they fight, precludes the chameleon hypothesis as a logical contender for dim energy. They likewise propose that their system features the requirement for hearty, lab-based testing for the purpose of checking or ruining hypothetical examinations. They propose that their system could also be used in other projects.
More information: Peiran Yin et al, Experiments with levitated force sensor challenge theories of dark energy, Nature Physics (2022). DOI: 10.1038/s41567-022-01706-9
Journal information: Nature Physics
