scholarly journals SPACETIME FOAM, HOLOGRAPHIC PRINCIPLE, AND BLACK HOLE QUANTUM COMPUTERS

2005 ◽  
Author(s):  
Y. JACK NG ◽  
H. VAN DAM
Keyword(s):  
Black Hole ◽  
Holographic Principle ◽  
Quantum Computers ◽  
Spacetime Foam

scholarly journals SPACETIME FOAM, HOLOGRAPHIC PRINCIPLE, AND BLACK HOLE QUANTUM COMPUTERS

2005 ◽  
Vol 20 (06) ◽  
pp. 1328-1335 ◽  
Author(s):  
Y. JACK NG ◽  
H. VAN DAM
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Fluctuations ◽  
Holographic Principle ◽  
Quantum Computers ◽  
Computational Power ◽  
Spacetime Foam

Spacetime foam, also known as quantum foam, has its origin in quantum fluctuations of spacetime. Arguably it is the source of the holographic principle, which severely limits how densely information can be packed in space. Its physics is also intimately linked to that of black holes and computation. In particular, the same underlying physics is shown to govern the computational power of black hole quantum computers.

scholarly journals SPACETIME FOAM

2002 ◽  
Vol 11 (10) ◽  
pp. 1585-1590 ◽  
Author(s):  
Y. JACK NG
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Black Hole Physics ◽  
Atom Interferometry ◽  
Holographic Principle ◽  
Experimental Result ◽  
Semiclassical Gravity ◽  
Spacetime Foam ◽  
Spacetime Fluctuations

Spacetime is composed of a fluctuating arrangement of bubbles or loops called spacetime foam, or quantum foam. We use the holographic principle to deduce its structure, and show that the result is consistent with gedanken experiments involving spacetime measurements. We propose to use laser-based atom interferometry techniques to look for spacetime fluctuations. Our analysis makes it clear that the physics of quantum foam is inextricably linked to that of black holes. A negative experimental result, therefore, might have non-trivial ramifications for semiclassical gravity and black hole physics.

The Holographic Universe

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Jean-Pierre Luminet
Keyword(s):  
Black Hole ◽  
De Sitter Space ◽  
Holographic Principle ◽  
De Sitter ◽  
Information Paradox

How is a black hole in a 5-D anti de Sitter space like a flat 4-D field of particles and radiation? Jean-Pierre Luminet explains the holographic principle, the Maldacena conjecture, and the resolution of the information paradox.

scholarly journals A new type of nonsingular black-hole solution in general relativity

2014 ◽  
Vol 29 (19) ◽  
pp. 1430018 ◽  
Author(s):  
F. R. Klinkhamer
Keyword(s):  
Black Hole ◽  
Spherically Symmetric ◽  
Curvature Singularity ◽  
Einstein Field Equations ◽  
Field Equations ◽  
Schwarzschild Solution ◽  
Gravity Effects ◽  
New Type ◽  
Nontrivial Topology ◽  
Spacetime Foam

Certain exact solutions of the Einstein field equations over nonsimply-connected manifolds are reviewed. These solutions are spherically symmetric and have no curvature singularity. They provide a regularization of the standard Schwarzschild solution with a curvature singularity at the center. Spherically symmetric collapse of matter in ℝ4 may result in these nonsingular black-hole solutions, if quantum-gravity effects allow for topology change near the center or if nontrivial topology is already present as a remnant from a quantum spacetime foam.

scholarly journals HOW SPACETIME FOAM MODIFIES THE BRICK WALL

2004 ◽  
Vol 19 (36) ◽  
pp. 2673-2682 ◽  
Author(s):  
REMO GARATTINI
Keyword(s):  
Black Hole ◽  
Black Hole Horizon ◽  
Invariant Distribution ◽  
Brick Wall ◽  
Scale Invariant ◽  
Wall Model ◽  
Brick Wall Model ◽  
Spacetime Foam

We re-examine the brick-wall model in the context of spacetime foam. In particular we consider a foam composed by wormholes of different sizes filling the black hole horizon. The contribution of such wormholes is computed via a scale-invariant distribution. We obtain that the brick wall divergence appears to be logarithmic when the cutoff is sent to zero.

scholarly journals Quantum tunneling approach of noncommutative geometry

2019 ◽  
Author(s):  
Vitaly Kuyukov
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Information ◽  
Minkowski Space ◽  
Event Horizon ◽  
Noncommutative Geometry ◽  
Quantum Tunneling ◽  
Holographic Principle ◽  
Minkowski Space Time ◽  
Thermodynamics Of Black Holes

Hawking and Beckenstein’s theory of the thermodynamics of black holes indicates that there is a connection between quantum information and gravity. In general, their result is called the holographic principle. According to it, the entropy of a black hole is proportional to the area of the sphere of the event horizon. In this paper, noncommutative geometry is generalized using the holographic principle. Under certain assumptions, it is possible to obtain results from this synthesis regarding the geometry of the Minkowski space-time. To do this, we consider two main provisions for the generalization of noncommutative geometry.

scholarly journals GRAVITATIONAL THERMODYNAMICS OF SPACETIME FOAM IN ONE-LOOP APPROXIMATION

2000 ◽  
Vol 09 (01) ◽  
pp. 91-95
Author(s):  
LIAO LIU ◽  
YONGGE MA
Keyword(s):  
Black Hole ◽  
Quantum Gravity ◽  
Thermal Equilibrium ◽  
Loop Quantum Gravity ◽  
Black Hole Thermodynamics ◽  
Flat Spacetime ◽  
Loop Approximation ◽  
Gravitational Thermodynamics ◽  
Spacetime Foam ◽  
Quantum Spacetime

We show from one-loop quantum gravity and statistical thermodynamics that the thermodynamics of quantum foam in flat spacetime and Schwarzschild spacetime is exactly the same as that of Hawking–Unruh radiation in thermal equilibrium. This means we show unambiguously that Hawking–Unruh thermal radiation should contain thermal gravitons or the contribution of quantum spacetime foam. As a by-product, we give also the quantum gravity correction in one-loop approximation to the classical black hole thermodynamics.

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