The Firewall Phenomenon

Mann, Robert B.

doi:10.1007/978-3-319-10852-0_3

Cited by 3 publications

(2 citation statements)

References 114 publications

(123 reference statements)

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“…Although it should be possible to directly study the multi-particle emissions of an incoming particle, a very technically demanding task, there should be other simpler ways to probe the quantum effects to the geometry and phenomena experienced by an infalling observer. One such route would be to analyze the energy density measured by an infalling observer [32] [13] [14]. We employ the setup of [31] and show that an infalling observer experiences an unsmooth entry through the horizon and measures a trans-Planckian energy at the horizon, although the stress-energy tensor is finite.…”

Section: Introductionmentioning

confidence: 99%

Quantum‐corrected Geometry of Horizon Vicinity

Park

2017

Fortschritte der Physik

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We study the deformation of the horizon-vicinity geometry caused by quantum gravitational effects. Departure from the semi-classical picture is noted, and the fact that the matter part of the action comes at a higher order in Newton's constant than does the Einstein-Hilbert term is crucial for the departure. The analysis leads to a Firewalltype energy measured by an infalling observer for which quantum generation of the cosmological constant is critical. The analysis seems to suggest that the Firewall should be a part of such deformation and that the information be stored both in the horizon-vicinity and asymptotic boundary region. We also examine the behavior near the cosmological horizon.

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Section: Introductionmentioning

confidence: 99%

Quantum‐corrected Geometry of Horizon Vicinity

Park

2017

Fortschritte der Physik

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“…The outgoing modes are thermal in description which is described by a mixed state. This process, in which a pure state seemingly evolves into a mixed state, is contrary to the unitary quantum evolution [48]. The thermal nature turns out to be particularly problematic.…”

Section: The Way It All Began!mentioning

confidence: 96%

Black Holes: Eliminating Information or Illuminating New Physics?

Chakraborty

Lochan

2017

Universe

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Black holes, initially thought of as very interesting mathematical and geometric solutions of general relativity, over time, have come up with surprises and challenges for modern physics. In modern times, they have started to test our confidence in the fundamental understanding of nature. The most serious charge on the black holes is that they eat up information, never to release and subsequently erase it. This goes absolutely against the sacred principles of all other branches of fundamental sciences. This realization has shaken the very base of foundational concepts, both in quantum theory and gravity, which we always took for granted. Attempts to get rid of of this charge, have led us to crossroads with concepts, hold dearly in quantum theory. The sphere of black hole's tussle with quantum theory has readily and steadily grown, from the advent of the Hawking radiation some four decades back, into domain of quantum information theory in modern times, most aptly, recently put in the form of the firewall puzzle. Do black holes really indicate something sinister about their existence or do they really point towards the troubles of ignoring the fundamental issues, our modern theories are seemingly plagued with? In this review, we focus on issues pertaining to black hole evaporation, the development of the information loss paradox, its recent formulation, the leading debates and promising directions in the community.Keywords: black hole physics; information loss paradox; quantum fields in curved background Being Simple is ComplexThe twentieth century was a time in theoretical physics when many innovative, visionary ideas gained firm ground. Experimental verifications of many remarkable ideas were, deservingly, celebrated as the decisive steps towards building a concrete understanding of nature. From the first decades of the century, two radically different but conceptually very profound ideas came out: Relativity-viewing space and time as a geometric fabric acting as stage on which everything else takes place-and Quantum theory-acknowledging the wave character of everything in the universe. These two theories came up with revolutionary and also beautiful insights which kept getting ratified time and again (without fail till date) by the most sophisticated experiments. However, they also did come with some radically counter-intuitive ideas at their cores. With the advent and the subsequent triumph of the quantum theory, we realized that determinism is not an intrinsic property of nature at the fundamental level and one needs to adopt the probabilistic interpretation for the most fundamental description. This feature of the new realization alone has caused certain unrest with the quantum theory, and has raised many discussion and proposals related to this particular character of the theory [1][2][3][4][5][6][7][8]. Relativity on the other hand, very beautifully describes gravity as an artifact of curvature of a fabric named the spacetime. Describing gravity as the curvature of the spacetime remarkably gives...

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Aspects of Quantum Black Holes

Kiefer

2020

J. Phys.: Conf. Ser.

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Black holes play a key role for any quantum theory of gravity. The main reasons are black hole radiation and evaporation as well as black hole entropy. I review these issues and address the problem of information loss. I then discuss the status of black holes in full quantum gravity. Particular attention is focused on quantum geometrodynamics, the direct quantization of general relativity. This allows scenarios in which the black-hole singularity is avoided, in particular the collapse of a wave packet towards a black-hole like state and its re-expansion as a white hole.

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The Firewall Phenomenon

Cited by 3 publications

References 114 publications

Quantum‐corrected Geometry of Horizon Vicinity

Quantum‐corrected Geometry of Horizon Vicinity

Black Holes: Eliminating Information or Illuminating New Physics?

Aspects of Quantum Black Holes

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