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What if the world of obscure topic was a mirror of our own , just with a break set of rules ? That might excuse why dark affair is likely so abundant yet invisible , a new theory suggests .
Dark matteris the orphic , unidentified meaning that seems to make up the mass of all the mass in the population ; for every 2 pounds ( 1 kilo ) of regular matter , there ’s just about 10 pound ( 5 kg ) of disconsolate matter . It does n’t interact with wanton or normal affair . The only means scientist can find it is through its elusive gravitative influence on normal topic , such as the motions of principal within galaxies and thegrowth of crack - large structuresin cosmic time .
It might be easy to think that because matter and sorry affair operate with different rules , one would be totally dominant over the other . But despite take wildly different properties , the amounts of normal thing and dark subject are still in the same park . That seems like a strange coincidence . To explain this , scientists pop the question there could be some sort of hide linkup between them . They published their researchJan . 22 on the preprint journal arXiv .
The researchers posited that for every physical fundamental interaction in normal matter , there ’s a mirror of it in the populace of dark matter . This would be a novel kind of balance in nature , connecting the normal and dark subject worlds , the investigator pronounce .
This symmetry would help explicate why dark matter and regular matter have roughly the same abundance .
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In the composition , the investigator point out another foreign coincidence . In the purgative of normal topic , a neutron and proton have almost exactly the same great deal , which enables them to oblige together and form stable atoms . If a proton was just a footling act heavier , it would be totally unstable and crumble in only a few minutes , making the formation of atoms impossible . In this imaginary scenario , the universe would be leave with a sea of free - floating neutrons .
Perhaps , the researchers suggest , this imaginary number , broken cosmos may be a reality in the saturnine topic mirror version of our population . A special compounding of physics led to a proton having roughly the same spate as a neutron ; perhaps in the dark thing mirror , that combination of physics played out differently , causing the " dark proton " to evaporate and depart behind a ocean of " blue neutron " — what we identify as sorry topic .
While this proposed mirror model allows for the possibility of plenteous interaction among glum matter particles — dark mote , dark alchemy and adark periodic table of dark elements — there ca n’t be too much interaction , the researchers noted . If the drab matter interacts with itself a lot , it would incline to clump up far more than scientist think it does . So most of the dark matter has to be comparatively simple — a sea of free - floating , achromatic corpuscle .
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These additional interactions , which would be a dark mirror of our chemical world , may enable future scientist to test this theory . In the early creation , normal matter underwent nucleosynthesis , when the first element constitute in a nuclear plasm . If this new idea is right , then there was a mirror nucleosynthesis also happen in dour matter . In those chaotic early daytime , channels may have opened up between the two worlds , enable them to affect each other .
By cautiously valuate the rate of element formation — something that the next generation of cosmologic observatory hope to do — scientists may be able-bodied to find evidence for one of these channels and get a glimpse into the mirror dark universe .
