The population is expanding quicker and quicker and the good explanation for this force is the world of an zip field that permeate all of clock time and space . We call that dark energy . We are not certain that dark energy survive and if it does , we do n’t bonk what it is . One interesting theory , proposed in 2003 , intimate the existence of a particle and associated force that can interact with subject but very weak . This is the " chamaeleon " particle and hypothetical fifth force . But a new experiment has show that this force is unlikely to exist .
The four key force of nature are gravitational force , electromagnetics , and the unattackable and weak atomic force-out . This Chamaeleon force play would scale with the environ density , so near Earth it would be very weak but in less dense region , like intergalactic outer space , it would be felt . The term chameleon comes from the power to exchange in different environments .
“ Despite substantial efforts in astrophysical observations and testing ground experiments , old tests are not sufficiently accurate to bring home the bacon critical conclusions as to the validity of these hypothesis . One especially compelling mind — the so - called chameleon theory — describes an ultra - sluttish scalar field that couple to normal - matter fields and leave measurable effects that are not explained by the four cardinal fundamental interaction , a so - call fifth violence , ” the authors , led by a team at Nanjing University , write in their newspaper publisher published inNature Physics .
To see if the mysterious fundamental interaction could be detected , the research team used a roulette wheel with plastic films attached that spun past another film sit on a levitating force sensor made of black lead . For the chameleon theory to be right – the Chamaeleon force would wield less force in a dense environs – the birl films should exert a periodic force-out on the levitating photographic film , pulling it up and down .
The gimmick , go under to measure the displacement between the two masses , was in a faraday batting cage to block electric fields . But , despite being 100 times more tender than previous detectors , it could not value any anomaly .
“ We encounter no grounds for the 5th force predicted by chameleon modelling , " the team explained in the paper . " Our solvent decisively rule out the basic chameleon mannikin as a prospect for dark energy and march the hardiness of laboratory experiments for unveiling the nature of coloured vigor in the future . The methodology developed here could be further apply to examine a large-minded chain of profound physics . "
The findings dominate out most versions of the chameleon account of dark energy , but the team hopes to improve the organization by cooling it down to very low temperatures . This could be used to further poke into the Chamaeleon hypothesis and other explanations for obscure energy .
