scholarly journals Relativistic collapse dynamics and black hole information loss

2016 ◽  
Vol 94 (4) ◽  
Author(s):  
Daniel Bedingham ◽  
Sujoy K. Modak ◽  
Daniel Sudarsky
Keyword(s):  
Black Hole ◽  
Information Loss ◽  
Black Hole Information ◽  
Relativistic Collapse

scholarly journals Wormhole calculus, replicas, and entropies

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Steven B. Giddings ◽  
Gustavo J. Turiaci
Keyword(s):  
Black Hole ◽  
Probability Distributions ◽  
Information Loss ◽  
Coupling Constants ◽  
Quantum Mechanical ◽  
Standard Description ◽  
Standard Quantum ◽  
Black Hole Information ◽  
Baby Universes ◽  
Baby Universe

Abstract We investigate contributions of spacetime wormholes, describing baby universe emission and absorption, to calculations of entropies and correlation functions, for example those based on the replica method. We find that the rules of the “wormhole calculus”, developed in the 1980s, together with standard quantum mechanical prescriptions for computing entropies and correlators, imply definite rules for limited patterns of connection between replica factors in simple calculations. These results stand in contrast with assumptions that all topologies connecting replicas should be summed over, and call into question the explanation for the latter. In a “free” approximation baby universes introduce probability distributions for coupling constants, and we review and extend arguments that successive experiments in a “parent” universe increasingly precisely fix such couplings, resulting in ultimately pure evolution. Once this has happened, the nontrivial question remains of how topology-changing effects can modify the standard description of black hole information loss.

scholarly journals Binary Black Hole Information Loss Paradox and Future Prospects

Entropy ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 1387
Author(s):  
Ayan Mitra ◽  
Pritam Chattopadhyay ◽  
Goutam Paul ◽  
Vasilios Zarikas
Keyword(s):  
Black Hole ◽  
Information Loss ◽  
Complete Agreement ◽  
Future Prospects ◽  
Information Loss Paradox ◽  
Binary Black Hole ◽  
Proposed Model ◽  
Qubit System ◽  
Input Source ◽  
Black Hole Information

Various techniques to tackle the black hole information paradox have been proposed. A new way out to tackle the paradox is via the use of a pseudo-density operator. This approach has successfully dealt with the problem with a two-qubit entangle system for a single black hole. In this paper, we present the interaction with a binary black hole system by using an arrangement of the three-qubit system of Greenberger–Horne–Zeilinger (GHZ) state. We show that our results are in excellent agreement with the theoretical value. We have also studied the interaction between the two black holes by considering the correlation between the qubits in the binary black hole system. The results depict a complete agreement with the proposed model. In addition to the verification, we also propose how modern detection of gravitational waves can be used on our optical setup as an input source, thus bridging the gap with the gravitational wave’s observational resources in terms of studying black hole properties with respect to quantum information and entanglement.

scholarly journals VERTEX OPERATOR FORMULATION OF SCATTERING AROUND BLACK-HOLE

2010 ◽  
Vol 25 (14) ◽  
pp. 1169-1176 ◽  
Author(s):  
I. Y. PARK
Keyword(s):  
Black Hole ◽  
Perturbation Theory ◽  
Vertex Operator ◽  
Scattering Amplitude ◽  
Open String ◽  
Information Loss ◽  
Black Brane ◽  
Unitary Evolution ◽  
Black Hole Information ◽  
Set Up

We propose a full-fledged open string framework that seems suited to study the black hole information paradox. We set up a configuration to compute the scattering amplitude of a IIB open string around a D5-brane. The D5-brane is situated at the origin of a transverse D3-brane. A string perturbation theory is employed where the geometry of the D5-brane is treated as a potential. We reason that the setup is capable of reconciling the unitary evolution of states and information loss that is measured by an observer on the D3 brane. With the configurations of these kinds, the information loss is an apparent phenomenon: it is just a manifestation of the fact that the D3-observer does not have access to the "hair" of the D5 black brane.

scholarly journals Towards experimentally testing the paradox of black hole information loss

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Baocheng Zhang ◽  
Qing-yu Cai ◽  
Ming-sheng Zhan ◽  
Li You
Keyword(s):  
Black Hole ◽  
Information Loss ◽  
Black Hole Information

scholarly journals ROLE OF VARIOUS ENTROPIES IN THE BLACK HOLE INFORMATION LOSS PROBLEM

2007 ◽  
Author(s):  
Th. M. NIEUWENHUIZEN ◽  
I. V. VOLOVICH
Keyword(s):  
Black Hole ◽  
Information Loss ◽  
Black Hole Information ◽  
Information Loss Problem

scholarly journals Non-Monogamy of Spatio-Temporal Correlations and the Black Hole Information Loss Paradox

Entropy ◽  
2020 ◽  
Vol 22 (2) ◽  
pp. 228 ◽  
Author(s):  
Chiara Marletto ◽  
Vlatko Vedral ◽  
Salvatore Virzì ◽  
Enrico Rebufello ◽  
Alessio Avella ◽  
...  
Keyword(s):  
Black Hole ◽  
Physical Phenomenon ◽  
Quantum Correlations ◽  
Information Loss ◽  
Experimental Demonstration ◽  
Information Loss Paradox ◽  
Temporal Correlations ◽  
Black Hole Information ◽  
Spatio Temporal ◽  
Theoretical Proposal

Pseudo-density matrices are a generalisation of quantum states and do not obey monogamy of quantum correlations. Could this be the solution to the paradox of information loss during the evaporation of a black hole? In this paper we discuss this possibility, providing a theoretical proposal to extend quantum theory with these pseudo-states to describe the statistics arising in black-hole evaporation. We also provide an experimental demonstration of this theoretical proposal, using a simulation in optical regime, that tomographically reproduces the correlations of the pseudo-density matrix describing this physical phenomenon.

Black-hole Information Loss Problem: Past, Present, and Future

2020 ◽  
Vol 29 (11) ◽  
pp. 17-25
Author(s):  
Sang-Heon YI ◽  
Dong-han YEOM
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Mechanics ◽  
Quantum Information ◽  
Hawking Radiation ◽  
Recent Progress ◽  
Information Loss ◽  
Future Perspectives ◽  
Black Hole Information ◽  
Information Loss Problem

In this article, we discuss the information loss problem of black holes and critically review candidate resolutions of the problem. As a black hole evaporates via Hawking radiation, it seems to lose original quantum information; this indicates that the unitarity of time evolution in quantum mechanics and the fundamental predictability of physics are lost. We categorized candidate resolutions by asking (1) where information is and (2) which principle of physics is changed. We also briefly comment on the recent progress in the string theory community. Finally, we present several remarks for future perspectives.

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