That fact implies a conundrum known
as the black hole information paradox (SN: 5/31/14, p. 16): When the black hole evaporates, where does the information go?
The idea proposed by the three physicists offers a new strategy for addressing a long - standing conundrum in physics known
as the black hole information paradox.
Some support the preprint's claim — that it provides a promising way to tackle a conundrum known
as the black hole information paradox, which Hawking identified more than 40 years ago.
Not exact matches
Sometimes thought leads nowhere,
as in considerations of what happens to
information absorbed by a
black hole.
This is intriguing, but,
as long
as the
black hole continues to exist, we do not need to worry about what might have happened to the
information, or entropy, associated with the original star.
The result, says Bekenstein, is a «gradual
information outflux» with «the
black hole entropy becoming gradually less and less» until in the end it vanishes
as the
black hole vanishes.
But nowadays a deep conceptual link shows up not only between Shannon's
information theory and thermodynamics, but in fields
as diverse
as quantum mechanics, molecular biology and the physics of
black holes.
Likewise, if
black holes act like
information mirrors,
as Hayden and Preskill suggested, a particle falling into a
black hole would be followed by an antiparticle coming out — a partner with the opposite electric charge — which would carry the
information contained in the spin of the original particle.
The paradox could also be resolved if
black holes do not include a true singularity, or if,
as Stephen Hawking has suggested, the Hawking radiation contains the
information, albeit in a mangled and unreadable state.
As black holes evaporate, they release particles that may carry more
information than we thought, so
black holes may not break the laws of physics after all
These particles would in effect serve
as recording devices that store
information, providing clues about the original material that went into the
black hole.
That suggests the outgoing Hawking radiation carries away nearly all of the
information of the matter — such
as a spaceship — that falls into the
black hole.
As such, while some theorists have speculated our future descendants could transfer
information to new «baby» universes via wormholes or
black hole formation, it appears inevitable that after some point, intelligence in our own universe will simply be impossible.
The calculation touches on one of the biggest mysteries in physics: how all of the
information trapped in a
black hole leaks out
as the
black hole «evaporates.»
«By picking up the gravitational waves associated with these events, we will be able to access precious
information that was previously hidden, such
as whether the collision of a star and a
black hole has ignited the burst and roughly how massive these objects were before the impact,» explained Dr Ohme, who has focused his research on predicting the exact shape of the gravitational wave signals scientists are expecting to see.
The Chandra X-Ray Observatory has been busy gathering
information on cosmic phenomena such
as supernovas and
black holes, and will continue to do so until at least the year 2009.
As far as everything else is concerned the black hole has «no hair» (no causal connection to information about its previous state
As far
as everything else is concerned the black hole has «no hair» (no causal connection to information about its previous state
as everything else is concerned the
black hole has «no hair» (no causal connection to
information about its previous state).
Gravitational waves — ripples in the fabric of space and time produced by dramatic events in the universe, such
as merging
black holes, and predicted
as a consequence of Albert Einstein's 1915 general theory of relativity — carry
information about their origins and about the nature of gravity that can not otherwise be obtained.
To answer this question, the scientists will combine the
information from the
black hole shadow and from the motion of pulsars and stars around Sagittarius A * with detailed computer simulations of the behaviour of light and matter around
black holes as predicted by theory.
The paper outlines how interactions between particles emitted by a
black hole can reveal
information about what lies within, such
as characteristics of the object that formed the
black hole to begin with, and characteristics of the matter and energy drawn inside.
That's what some physicists have argued for years: That
black holes are the ultimate vaults, entities that suck in
information and then evaporate without leaving behind any clues
as to what they once contained.
The artist invites us to contemplate the suggestion of planet earth
as a
black hole, where all planetary matter has been swallowed and stored
as information on the event horizon.
Othere physicists claimed it was not possible to remove
information from the universe even in the most exotic situation imagineable — falling into a
black hole — because conservation of
information is
as inviolable
as conservation of energy and that both conservation laws are in fact different manifestations of the same phenomenon.