Posts Tagged ‘black holes’

No black holes, no Big Bang would leave the universe without a beginning

September 30, 2014

There is now a mathematical proof that black holes cannot exist. Event horizons and singularities then also cannot exist. Without singularities being possible there could have been no Big Bang. And without a Big Bang, the “age” of the universe has no meaning. Where does that leave time? and space-time?

(And without a Big Bang I will have to revisit my view of stasis since my own little speculation is that while time periods – Δt – can be conceived of, time itself – t- is nothing other than an axis of change connecting states of stasis.)

Black Hole star eater – National Geographic

If the mathematics holds up then not only science but also science fiction will have to look for new concepts of space and space-time and pathways to different universes and worm-holes and warp-speeds.

PhysOrg: … By merging two seemingly conflicting theories, Laura Mersini-Houghton, a physics professor at UNC-Chapel Hill in the College of Arts and Sciences, has proven, mathematically, that can never come into being in the first place. The work not only forces scientists to reimagine the fabric of space-time, but also rethink the origins of the universe. ……

The reason black holes are so bizarre is that it pits two fundamental theories of the universe against each other. Einstein’s theory of gravity predicts the formation of black holes but a fundamental law of quantum theory states that no information from the universe can ever disappear. Efforts to combine these two theories lead to mathematical nonsense, and became known as the information loss paradox.

In 1974, Stephen Hawking used quantum mechanics to show that black holes emit radiation. Since then, scientists have detected fingerprints in the cosmos that are consistent with this radiation, identifying an ever-increasing list of the universe’s black holes.

But now Mersini-Houghton describes an entirely new scenario. She and Hawking both agree that as a star collapses under its own gravity, it produces Hawking radiation. However, in her new work, Mersini-Houghton shows that by giving off this radiation, the star also sheds mass. So much so that as it shrinks it no longer has the density to become a black hole.

Before a black hole can form, the dying star swells one last time and then explodes. A singularity never forms and neither does an . The take home message of her work is clear: there is no such thing as a black hole.

….. Many physicists and astronomers believe that our originated from a singularity that began expanding with the Big Bang. However, if singularities do not exist, then physicists have to rethink their ideas of the Big Bang and whether it ever happened.

“Black holes don’t exist” – Hawking applied to climate

February 3, 2014

Stephen Hawking’s recent paper is causing much consternation as Geraint Lewis describes in  The Conversation.

But could it be that it is Hawking’s non-existent black holes – located at the bottom of the oceans – which have swallowed up all the heat predicted by climate models and which has gone missing?

Grey is the new black hole: is Stephen Hawking right?

Over the past few days, the media has cried out the recent proclamation from Stephen Hawking that black holes, a mystery of both science and science fiction, do not exist.

Such statements send social media into conniptions, and comments quickly degenerate into satirical discussions of how you should never believe anything scientists say, as they just make it up anyway.

S. W. Hawking, Information Preservation and Weather Forecasting for Black Holes, arXiv:1401.5761v1

Abstract: It has been suggested [1] that the resolution of the information paradox for evaporating black holes is that the holes are surrounded by firewalls, bolts of outgoing radiation that would destroy any infalling observer. Such firewalls would break the CPT invariance of quantum gravity and seem to be ruled out on other grounds. A different resolution of the paradox is proposed, namely that gravitational collapse produces apparent horizons but no event horizons behind which information is lost. This proposal is supported by ADS-CFT and is the only resolution of the paradox compatible with CPT. The collapse to form a black hole will in general be chaotic and the dual CFT on the boundary of ADS will be turbulent. Thus, like weather forecasting on Earth, information will effectively be lost, although there would be no loss of unitarity.

But while Geraint Lewis considers whether “black” is actually “grey”, I think it is no more complicated than a zero-sum game of arcane physics. Whereas zero divided by zero may be indeterminate it seems to me that zero multiplied by zero must be a double zero.

Apart from the obvious that a “black hole” – by its very naming – must therefore mean a double-dose of nothingness it is worth noting that Hawking – being the ultimate authority for Sheldon Cooper – distinguishes between “apparent horizons” which are not real “event horizons” and that he compares the chaos of collapse to a black hole to “weather forecasting”!!

Or did he mean “climate forecasts” and “climate modelling”? After all the hidden heat could well have been swallowed up into the fathomless pit of climatic black holes.

Maybe the abstract should read:

Chaotic climate and the black holes of climate modelling

It has been suggested that the resolution of the climate paradox for hidden heat is that the oceans are surrounded by firewalls, bolts of outgoing radiation that would destroy any infalling climatologist. Such firewalls would break the fundamental laws of thermodynamics and seem to be ruled out on other grounds. A different resolution of the paradox is proposed, namely that climate models produces apparent warming but the warming is a negative warming where heat is lost. This proposal is supported by the reality of the hiatus in global temperatures and is the only resolution of the paradox compatible with CS (common sense). The collapse to enter the new glacial will in general be chaotic and the approach of such a condition will be turbulent. Thus, like weather forecasting on Earth, information will effectively be lost, although there would be no loss of unitarity.


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