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Dr Konstantinos Dimopoulos, a physicist at the University of Lancaster, believes that at the centre of some galaxies – where densely packed gas and dust burns incredibly brightly around a supermassive black hole – powerful magnetic fields which fire out from the jets of the black holes could affect the properties of dark matter.

As the burning galactic nucleus churns, Dr Dimopoulos claim that one type of dark matter in particular, made of theoretical particles called axions, would be affected.

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With that goal in mind, a few years back, Wiseman began to ponder what would happen if multiple worlds not only existed, but could influence each other. Within these worlds even objects on the smallest scales obey the plain old rules that Isaac Newton devised to explain force and motion. A classical law is also used to describe the forces that the parallel worlds exert on each other. “Ours is a new picture of reality at the atomic scale,” Hall says, adding that they believe it to be “both elegant in principle, and useful for calculations in practice.”

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Nice


Some 42 years ago, renowned theoretical physicist Stephen Hawking proposed that not everything that comes in contact with a black hole succumbs to its unfathomable nothingness.

Tiny particles of light (photons) are sometimes ejected back out, robbing the black hole of an infinitesimal amount of energy, and this gradual loss of mass over time means every black hole eventually evaporates out of existence.

Known as Hawking radiation, these escaping particles help us make sense of one of the greatest enigmas in the known Universe, but after more than four decades, no one’s been able to actually prove they exist, and Hawking’s proposal remained firmly in hypothesis territory.

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Welcome to our imaginary existential nightmare…


Stephen Hawking recently discussed black holes and the often contradictory properties associated with them during a lecture at Harvard. The Harvard Gazette said recently that Hawking specifically explained that, if information is really lost in black holes, then we will have been misunderstanding not only black holes, but the science of determinism, for the last 200 years.

Hawking said that particles that fall into a black hole “can’t just emerge when the black hole disappears.” Instead, “the particles that come out of a black hole seem to be completely random and bear no relation to what fell in. It appears that the information about what fell in is lost, apart from the total amount of mass and the amount of rotation.”

To put that more simply, it’s like someone shooting a basketball into a hoop and, instead of the ball coming out of the basket, something totally different comes out. But that’s not what Hawking is concerned about – he’s more concerned with the fact that the basketball – or information – seems to vanish altogether.

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Large Hadron Collider (LHC) Could Detect Extra Dimensions.

A recent paper published in Physics Letters B has raised the prospect that the Large Hadron Collider (LHC) could mark a discovery that would put its earlier achievements with the #HiggsBoson in the shade. The authors of the recent published paper propose it could spot mini black holes. Such a discovery would be a matter of massive importance on its own, but might be a sign of even more significant things. Few notions from theoretical physics capture the public imagination as much as the “many-worlds theory,” which suggests an infinite number of universes that vary from our own in ways large and small. The notion has delivered great fodder for science fiction novelists and comedians. Nevertheless, according to Professor Mir Faizal from the University of Waterloo, “Normally, when people think of the multiverse, they think of the many-worlds interpretation of quantum mechanics, where every possibility is actualized,” he told Phys.org. “This cannot be tested and so it is philosophy and not science.” Nonetheless, Faizal reflects the test for a different type of parallel universes nearly within our reach. Faizal says “What we mean is real universes in extra dimensions. As gravity can flow out of our universe into the extra dimensions, such a model can be tested by the detection of mini black holes at the LHC.”

#ParticlePhysics #Extradimensions #LHC #CERN #TheoreticalPhysics #BlackHoles

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A new research paper published in Physical Review Letters has brought forward a significant new understanding of general relativity laws, and has found some strange physics taking place inside black holes. Specifically, that the direction of time could be reversed within them. Several physical procedures are perfectly symmetric in time. Take a pendulum for instance. If someone shows you a video of a pendulum swinging, you cannot differentiate if the video is actually moving forward or backward. But some processes are not symmetric at all. We can tell that a pendulum will ultimately slow because of friction and we know that it was triggered at some point, so we can give a temporal direction to physics. The directionality of time and our view of it was called the “Arrow of Time” by British astronomer Arthur Eddington, and it has been connected to the entropy of the cosmos.

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