The “ no - hair theorem ” of black holes , which greatly simplifies the way we model them , may not be dependable if an substitute hypothesis of gravity known as the teleparallel conceptualization is right , an unpublished theme argues . This could make the subject field of smutty holes considerably more complicated , but it would also allow physicists to translate them in ways many have feared they never will .
agree to the “ no - hair theorem ” , a black hole ’s mass , electric charge , and spin can order us everything there is to know about that muddle . Anything else we might measure , such as its charismatic moment , can be derived from these three measuring rod .
Crucially , that stand for that when issue is swallowed by a black hole ’s event skyline , all the information contained within it is drop off , once the black trap has emitted any gravitative waves or light associated with its meal . It does n’t matter what elements operate into forming a black hole ’s predecessor ace , or even if it was made of antimatter rather than weigh – under the no - pilus theorem , it would appear very to anyone outside itsevent horizon . The term “ hair ” is a metaphor for selective information stream out of a black hole beyond the point of no riposte for incoming objects .
The no - hair theorem is one of the many thing physicists have so far been unable to evidence , but most strongly suspect is dependable , and work on black holes often handle it as a make . However , some rebels continue to plug away , seek evidence to refute it .
The five authors of a yet - to - be - match - reviewed paper were n’t necessarily hoping to prove black fix hirsute . Instead , they were explore the implication of the teleparallel formulation of Einstein - Gauss - cowl gravity . This is one of the substitute theories of gravity to General Relativity . Unlike the no - whisker theorem , most physicist suspect General Relativity is not a perfect description of the universe , at least as currently understand . It ’s inconsistent with quantum mechanics for example , which says entropy can never be truly destroyed . However , general relativity also continues to passtest after test , and all the choice are less graceful and harder to work in .
Nevertheless , some brave scientists continue to explore the implications of these alternatives . agree to the preprint ; “ In the teleparallel conceptualization , somberness is describe by contortion instead of curvature . ” That is , instead of masses curving spacetime as in Einstein ’s original vision of gravitational force , they twist it .
The authors account they found two ways to fix the equations they encountered in this quest . One of these produced results boringly interchangeable to former studies , so they rivet on the other path , which head them to haired shameful holes . This takes the form of scalar W. C. Fields like those created by certain subatomic particles , snug to – but outdoors – the event horizon , providing an extra form of selective information about what is inside . For example , gravitational radioactivity could be emitted .
The preprint admit this is n’t unprecedented ; “ Several modified theories of gravity by nature possess [ haired ] smutty hole solution , ” they write .
A preprint of the newspaper publisher is useable onArXiv.org
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