For the
first time ever, physicists have magnificently simulated what would occur to
black holes in a five-dimensional world, and the way they act could threaten
our essential understanding of how the Universe works. According to this
simulation, if our Universe is made up of five or even more dimensions -
something that researchers have struggled to approve or negate - Einstein's
general theory of relativity, the base of modern physics, would be incorrect.
In other words, five-dimensional black holes would comprise gravity so
powerful, the laws of physics as we know them would eventually fall apart.

In a
five-dimensional universe, physicists have theorized that black holes are more
like very tinny rings instead of just holes, and as they grow, they can
contribute increase to a sequence of 'bulges' that become thinner and thinner
with time, and ultimately break off to make mini black holes elsewhere.

These
ring-shaped black holes (also known as 'black rings') were initially suggested in 2002, but until now, no one’s been able to effectively simulate their
growth.

This has
been made conceivable thanks to the COSMOS supercomputer at the University of
Cambridge in the UK - the biggest shared-memory computer in Europe that can
achieve 38.6 trillion calculations per second.

The
difficultly with five-dimensional black holes is that they’re believed to
comprise of 'ultragravity rings', where gravity is so powerful, it gives
upsurge to a state called Naked Singularity. Naked singularity is an occurrence
so extraordinary, no one actually knows what would happen inside it, excluding
that the laws of general relativity simply would no longer apply.

Theoretical physicist Markus Kunesch from the University of Cambridge, says, "As long
as singularities stay hidden behind an event horizon, they do not cause trouble
and general relativity holds - the 'cosmic censorship conjecture' says that
this is always the case. As long as the cosmic censorship conjecture is valid,
we can safely predict the future outside of black holes."

But what if
singularity could occur just outside a black hole's event horizon? Physicists
have theorized that in five or more dimensions, if an object that has shrunken
to an infinite density – called singularity - is not restricted by an event
horizon, it turn into naked singularity, and things would get so cracked in and
around that object, we'd need to totally rethink our understanding of how
physics works.

Kunesch and
his group scientists say they've just about reached the limits of what their
supercomputer can simulate, but would like to work out what it is about
four-dimensional universes that create naked singularity impossible, and
general relativity right. Tunyasu vunakool says, "If cosmic censorship
doesn't hold in higher dimensions, then maybe we need to look at what's so
special about a four-dimensional universe that means it does hold,"

The research
has been issued in Physical Review Letters, and here you can learn about 11 dimensional universe explained by Michio Kaku.

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