By Tereza Pultarova

Black holes behave like quantum particles a new study has revealed. (Image credit: NightCafe Creator AI)

Black holes have properties characteristic of quantum particles, a new study reveals, suggesting that the puzzling cosmic objects can be at the same time small and big, heavy and light, or dead and alive, just like the legendary Schrödinger's cat.

The new study, based on computer modeling, aimed to find the elusive connection between the mind-boggling time-warping physics of supermassive objects such as

The study team developed a mathematical framework that placed a simulated

"We wanted to see whether [black holes] could have wildly different masses at the same time, and it turns out they do," study lead author Joshua Foo, a PhD researcher in theoretical physics at the University of Queensland, said in a

The best known example of quantum superposition is the legendary Schrödinger's cat, a thought experiment designed by early 20th century physicist Erwin Schrödinger to demonstrate some of the key issues with quantum physics. According to quantum theories, subatomic particles exist in multiple states simultaneously until they interact with the external world. This interaction, which could be the simple act of being measured or observed, throws the particle into one of the possible states.

Schrödinger, who won the Nobel Prize in Physics in 1933, intended the experiment to demonstrate the absurdity of quantum theory, as it would suggest that a cat locked in a box can be at the same time dead and alive based on the random behavior of atoms, until an observer breaks the superposition.

However, as it turned out, while a cat in a box could be dead regardless of the observer's actions, a quantum particle may indeed exist in a double state. And the new study indicates that a black hole does as well.

American and Israeli theoretical physicist Jacob Bekenstein* was the first to postulate that black holes may have quantum properties. Since a black hole is defined by its mass, its quantum superposition must mean that this odd gravitational gateway can have multiple masses that fall within certain ratios.

"Our modeling showed that these superposed masses were, in fact, in certain determined bands or ratios — as predicted by Bekenstein," study co-author Magdalena Zych, a physicist at the University of Queensland and a co-supervisor of the research, said in the statement. "We didn't assume any such pattern going in, so the fact we found this evidence was quite surprising."

The

Follow Tereza Pultarova on Twitter @TerezaPultarova(opens in new tab).

See: https://www.space.com/black-holes-h...campaign=58E4DE65-C57F-4CD3-9A5A-609994E2C5A9

From the new study:

We present a new operational framework for studying “superpositions of spacetimes,” which are of fundamental interest in the development of a theory of quantum gravity. Our approach capitalizes on nonlocal correlations in curved spacetime quantum field theory, allowing us to formulate a metric for spacetime superpositions as well as characterizing the coupling of particle detectors to a quantum field. We apply our approach to analyze the dynamics of a detector (using the Unruh-deWitt model) in a spacetime generated by a Banados-Teitelboim-Zanelli black hole in a superposition of masses. We find that the detector exhibits signatures of quantum-gravitational effects corroborating and extending Bekenstein’s seminal conjecture concerning the quantized mass spectrum of black holes in quantum gravity. Crucially, this result follows directly from our approach, without any additional assumptions about the black hole mass properties.

See: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.129.181301

* The most important discovery of Prof. Bekenstein (born 1947, Mexico, death 2015) is his realization that black holes have a temperature and carry entropy proportional to the area of their event horizon.

This has sparked the creation of an entire field devoted to the study of black hole thermodynamics where the theories of quantum mechanics, general relativity and statistical mechanics are deeply intertwined. This has led to advances in quantum gravity and string theory. He also demonstrated that it is not possible for an observer to measure anything about the black hole except their total mass, angular momentum and electromagnetic charge. This discovery led to the current description of black holes as very simple objects and provides constraints on theories that modify general relativity. These seminal advances have been used by many others and continue to have vast influence in cosmology and theoretical physics.

Professor Bekenstein discovered that a black hole possesses entropy, whose value is proportional to its surface area. Therefore it also has a characteristic temperature. This has led to a new understanding of black holes, but also to an interesting new question, namely, how do these new properties originate? Many research groups are now studying this question, the answer to which will necessitate an understanding of the microscopic structure and dynamics of the black hole.

Prof. Bekenstein

See: https://wolffund.org.il/2018/12/11/jacob-bekenstein/

Are we any closer to understanding what is going on inside black holes? Doubtful. But whatever it is, it is probably even more fantastic than we could imagine.

Hartmann352

Black holes behave like quantum particles a new study has revealed. (Image credit: NightCafe Creator AI)

Black holes have properties characteristic of quantum particles, a new study reveals, suggesting that the puzzling cosmic objects can be at the same time small and big, heavy and light, or dead and alive, just like the legendary Schrödinger's cat.

The new study, based on computer modeling, aimed to find the elusive connection between the mind-boggling time-warping physics of supermassive objects such as

__black holes__and the principles guiding the behavior of the tiniest subatomic particles.The study team developed a mathematical framework that placed a simulated

__quantum particle__just outside a giant simulated black hole. The simulation revealed that the black hole showed signs of quantum superposition, the ability to exist in multiple states at once — in this case, to be at the same time both massive and not massive at all."We wanted to see whether [black holes] could have wildly different masses at the same time, and it turns out they do," study lead author Joshua Foo, a PhD researcher in theoretical physics at the University of Queensland, said in a

__statement__(opens in new tab). "Until now, we haven't deeply investigated whether black holes display some of the weird and wonderful behaviors of quantum physics."The best known example of quantum superposition is the legendary Schrödinger's cat, a thought experiment designed by early 20th century physicist Erwin Schrödinger to demonstrate some of the key issues with quantum physics. According to quantum theories, subatomic particles exist in multiple states simultaneously until they interact with the external world. This interaction, which could be the simple act of being measured or observed, throws the particle into one of the possible states.

Schrödinger, who won the Nobel Prize in Physics in 1933, intended the experiment to demonstrate the absurdity of quantum theory, as it would suggest that a cat locked in a box can be at the same time dead and alive based on the random behavior of atoms, until an observer breaks the superposition.

However, as it turned out, while a cat in a box could be dead regardless of the observer's actions, a quantum particle may indeed exist in a double state. And the new study indicates that a black hole does as well.

American and Israeli theoretical physicist Jacob Bekenstein* was the first to postulate that black holes may have quantum properties. Since a black hole is defined by its mass, its quantum superposition must mean that this odd gravitational gateway can have multiple masses that fall within certain ratios.

"Our modeling showed that these superposed masses were, in fact, in certain determined bands or ratios — as predicted by Bekenstein," study co-author Magdalena Zych, a physicist at the University of Queensland and a co-supervisor of the research, said in the statement. "We didn't assume any such pattern going in, so the fact we found this evidence was quite surprising."

The

__new study__(opens in new tab) was published online in the journal Physical Review Letters on Friday (Oct. 28).Follow Tereza Pultarova on Twitter @TerezaPultarova(opens in new tab).

See: https://www.space.com/black-holes-h...campaign=58E4DE65-C57F-4CD3-9A5A-609994E2C5A9

From the new study:

We present a new operational framework for studying “superpositions of spacetimes,” which are of fundamental interest in the development of a theory of quantum gravity. Our approach capitalizes on nonlocal correlations in curved spacetime quantum field theory, allowing us to formulate a metric for spacetime superpositions as well as characterizing the coupling of particle detectors to a quantum field. We apply our approach to analyze the dynamics of a detector (using the Unruh-deWitt model) in a spacetime generated by a Banados-Teitelboim-Zanelli black hole in a superposition of masses. We find that the detector exhibits signatures of quantum-gravitational effects corroborating and extending Bekenstein’s seminal conjecture concerning the quantized mass spectrum of black holes in quantum gravity. Crucially, this result follows directly from our approach, without any additional assumptions about the black hole mass properties.

See: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.129.181301

* The most important discovery of Prof. Bekenstein (born 1947, Mexico, death 2015) is his realization that black holes have a temperature and carry entropy proportional to the area of their event horizon.

This has sparked the creation of an entire field devoted to the study of black hole thermodynamics where the theories of quantum mechanics, general relativity and statistical mechanics are deeply intertwined. This has led to advances in quantum gravity and string theory. He also demonstrated that it is not possible for an observer to measure anything about the black hole except their total mass, angular momentum and electromagnetic charge. This discovery led to the current description of black holes as very simple objects and provides constraints on theories that modify general relativity. These seminal advances have been used by many others and continue to have vast influence in cosmology and theoretical physics.

Professor Bekenstein discovered that a black hole possesses entropy, whose value is proportional to its surface area. Therefore it also has a characteristic temperature. This has led to a new understanding of black holes, but also to an interesting new question, namely, how do these new properties originate? Many research groups are now studying this question, the answer to which will necessitate an understanding of the microscopic structure and dynamics of the black hole.

Prof. Bekenstein

See: https://wolffund.org.il/2018/12/11/jacob-bekenstein/

Are we any closer to understanding what is going on inside black holes? Doubtful. But whatever it is, it is probably even more fantastic than we could imagine.

Hartmann352

Last edited: