A statistical model of information evaporation of perfectly reflecting black holes

Gyöngyösi, László

doi:10.1142/s0219749915600254

Cited by 7 publications

(5 citation statements)

References 33 publications

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“…This also means that photons in this scenario follow the same trajectories of GR, implying an existence of an universal horizon at 2M, independently of the energy of the particle. 3 As it was shown in [86], the surface gravity can be defined as the peeling off of null geodesics d|r…”

Section: Peeling Off Properties Of Null Geodesicsmentioning

confidence: 98%

“…On the one hand, accepting the standard scenario dictated by GR seems in fact to imply a non-unitary evolution of quantum states, so violating a basic tenet of QFT. On the other hand, avoiding this loss of unitarity seems to require a radical departure from the equivalence principle that would predict no radical departure from standard physics at the event horizon of the black hole (see e.g., the so-called firewall paradigm proposed in [2][3][4][5][6][7] for quantum entropy and information evaporation from black holes).…”

Section: Introductionmentioning

confidence: 99%

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Black Hole Surface Gravity in Doubly Special Relativity Geometries

Relancio

Liberati

2022

Universe

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In a quantum gravity theory, spacetime at mesoscopic scales can acquire a novel structure very different from the classical concept of general relativity. A way to effectively characterize the quantum nature of spacetime is through a momentum dependent space-time metric. There is a vast literature showing that this geometry is related to relativistic deformed kinematics, which is precisely a way to capture residual effects of a quantum gravity theory. In this work, we study the notion of surface gravity in a momentum dependent Schwarzschild black hole geometry. We show that using the two main notions of surface gravity in general relativity we obtain a momentum independent result. However, there are several definitions of surface gravity, all of them equivalent in general relativity when there is a Killing horizon. We show that in our scheme, despite the persistence of a Killing horizon, these alternative notions only agree in a very particular momentum basis, obtained in a previous work, so further supporting its physical relevance.

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Section: Peeling Off Properties Of Null Geodesicsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Black Hole Surface Gravity in Doubly Special Relativity Geometries

Relancio

Liberati

2022

Universe

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show abstract

“…This complementarity is said to be a feature of the quantum mechanics of noncommuting observables, the process of observation being key. The main issue with this explanation [33] [34] is that no space-like surface contains duplicated quantum information.…”

Section: Modifying Our Understanding Of Information Storagementioning

confidence: 99%

Resolving the Information Paradox with Probabilistic Spacetime

Doren¹,

Harasymiw²

2023

JHEPGC

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It has been 50 years since Hawking described the black hole (BH) information paradox. The combination of BH radiation and subsequent BH evaporation was found to take trapped information into oblivion contrary to the law of conservation of quantum information. Numerous attempts have been made since to resolve this paradox. A brief review herein documents how all these attempts have significant shortcomings, meaning the paradox is still unresolved. A relatively new cosmological theory offers a resolution despite not being developed for that purpose. The theory, entitled the probabilistic spacetime theory (PST), starts with an alteration in one basic assumption compared to all current cosmological theories. Spacetime, instead of being seen as a void or container of other entities, is viewed as the most fundamental entity in the universe, composed of energy fragments, and (in keeping with the conservation principle) impermeable to destruction. The potential contribution of the PST in resolving the information paradox is delineated, with the finding that the single change in the conceptualization of spacetime results in the disappearance of the paradox and not information.

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“…One of the raised concerns against the paradigm of information preservations, i.e., the “black hole information paradox” related to the hypothetical loss of information inside black holes, has been solved: these puzzling cosmic bodies might release the “trapped” information through the Hawking radiation, until they evaporate [ 21 , 22 , 23 ]. It has been observed that the entropy of a black hole corresponds to the logarithm of a number of possible equally probable measurement choices u of the observer outside the event horizon.…”

Section: The Role Of Entropiesmentioning

confidence: 99%

Entropy Balance in the Expanding Universe: A Novel Perspective

Tozzi

Peters

2019

Entropy

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We describe cosmic expansion as correlated with the standpoints of local observers’ co-moving horizons. In keeping with relational quantum mechanics, which claims that quantum systems are only meaningful in the context of measurements, we suggest that information gets ergodically “diluted” in our isotropic and homogeneous expanding Universe, so that an observer detects just a limited amount of the total cosmic bits. The reduced bit perception is due the decreased density of information inside the expanding cosmic volume in which the observer resides. Further, we show that the second law of thermodynamics can be correlated with cosmic expansion through a relational mechanism, because the decrease in information detected by a local observer in an expanding Universe is concomitant with an increase in perceived cosmic thermodynamic entropy, via the Bekenstein bound and the Laudauer principle. Reversing the classical scheme from thermodynamic entropy to information, we suggest that the cosmological constant of the quantum vacuum, which is believed to provoke the current cosmic expansion, could be one of the sources of the perceived increases in thermodynamic entropy. We conclude that entropies, including the entangled entropy of the recently developed framework of quantum computational spacetime, might not describe independent properties, but rather relations among systems and observers.

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A statistical model of information evaporation of perfectly reflecting black holes

Cited by 7 publications

References 33 publications

Black Hole Surface Gravity in Doubly Special Relativity Geometries

Black Hole Surface Gravity in Doubly Special Relativity Geometries

Resolving the Information Paradox with Probabilistic Spacetime

Entropy Balance in the Expanding Universe: A Novel Perspective

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