“Black holes set a limitation on the number of species of elementary particles—quarks, leptons, neutrinos—which may exist. And black holes lead to a fundamental limitation on the rate at which information can be transferred for given message energy by any communication system.”

— Jacob Bekenstein

[Black holes and everyday physics, General relativity and gravitation, 14, 4, April 1982, 355–359, 10.1007/BF00756269]

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Jacob Bekenstein 6

Mexican-Israeli physicist 1947–2015

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“We show that it is natural to introduce the concept of black-hole entropy as the measure of information about a black-hole interior which is inaccessible to an exterior observer. Considerations of simplicity and consistency, and dimensional arguments indicate that the black-hole entropy is equal to the ratio of the black-hole area to the square of the Planck length times a dimensionless constant of order unity. A different approach making use of the specific properties of Kerr black holes and of concepts from information theory leads to the same conclusion, and suggests a definite value for the constant.”

Jacob Bekenstein (1947–2015) Mexican-Israeli physicist

[Black Holes and Entropy, Phys. Rev. D, 7, 8, 2333–2346, 15 April 1973, 10.1103/PhysRevD.7.2333]

“Neither quarks nor leptons exhibit any structure on a scale of about 10-16 cm, the currently attained resolution. We thus have no experimental reason but tradition to suspect that they are not the ultimate elementary particles. Accordingly, we idealize the quarks and leptons as pointlike particles, remembering that elementarity is subject to experimental test.”

Chris Quigg (1944) American physicist

[Gauge theories of the strong, weak, and electromagnetic interactions, Princeton University Press, 2013, 2, https://books.google.com/books?id=Lt6thfc1gAgC&pg=PA2]

“I'm sorry to disappoint science fiction fans, but if information is preserved, there is no possibility of using black holes to travel to other universes. If you jump into a black hole, your mass energy will be returned to our universe but in a mangled form which contains the information about what you were like but in a state where it can not be easily recognized. It is like burning an encyclopedia. Information is not lost, if one keeps the smoke and the ashes. But it is difficult to read. In practice, it would be too difficult to re-build a macroscopic object like an encyclopedia that fell inside a black hole from information in the radiation, but the information preserving result is important for microscopic processes involving virtual black holes.”

Stephen Hawking (1942–2018) British theoretical physicist, cosmologist, and author

"Information Loss in Black Holes" http://arxiv.org/abs/hep-th/0507171 (July 2005)

“Is the reader feeling confused about the status of the black hole information paradox and black holes in general? So am I!”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 5, Conventional Black Holes, p. 87

“If there is no connection between quarks and leptons, since quarks make up the proton, then the balance of the proton and electron charge is just a remarkable coincidence. It seems impossible for any thinking person to be satisfied with coincidence as an explanation. Some principle must relate the charges of the quarks and the leptons. What is it? A fancier way of saying it, and more or less equivalent, is that for the electroweak theory to make sense up to arbitrarily high energies, the symmetries on which it is based must survive quantum corrections.”

Chris Quigg (1944) American physicist

Nature's greatest puzzles. http://arxiv.org/PS_cache/hep-ph/pdf/0502/0502070v1.pdf SLAC Summer Institute 2004, p. 9.

“Black holes are where God divided by zero.”

Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity

“In a previous paper we showed that a static (nonrotating) black hole cannot be endowed with exterior scalar-meson or massive vector-meson fields. Here we show that the same is true for massive spin-2 meson fields. We also extend the above results to the case of a rotating stationary black hole. We conclude from our results that a black hole in its final (static or stationary) state cannot interact with the exterior world via the strong interactions which are mediated by meson fields such as the π (scalar), ρ (vector), and ƒ (spin-2). A direct consequence of this is the impossibility of determining the baryon number of the black hole by means of exterior measurements alone. This results in the transcendence of the law of baryon-number conservation as originally predicted by Wheeler.”

Jacob Bekenstein (1947–2015) Mexican-Israeli physicist

[Nonexistence of baryon number for black holes. II, Physical Review D, 5, 10, 15 May 1972, 2403–2412, 10.1103/PhysRevD.5.2403]

“A black hole is the ultimate manifestation of a region of strong gravity. The pull of gravity in a black hole is so strong that even light cannot escape from it and time stands still.”

Jayant Narlikar (1938) Indian physicist

Source: Jayant Narlikar Black Holes http://books.google.com/books?id=8qi55iSSeiwC, National Book Trust, India, 1 January 2006

“The subject of this book is the structure of space-time on length-scales from 10-13cm, the radius of an elementary particle, up to 1028cm, the radius of the universe. …we base our treatment on Einstein's General Theory of Relativity. This theory leads to two remarkable predictions about the universe: first, that the final fate of massive stars is to collapse behind an event horizon to form a 'black hole' which will contain a singularity; and secondly, that there is a singularity in our past which constitutes, in some sense, a beginning to the universe.”

Stephen Hawking book The Large Scale Structure of Space-Time

with G.F.R. Ellis, "The Large Scale Structure of Space-Time" (1973) Preface

“anymore time in that black hole and ill go insane.”

Gena Showalter (1975) American writer

Source: Intertwined

“Black holes set a limitation on the number of species of elementary particles—quarks, leptons, neutrinos—which may exist. And black holes lead to a fundamental limitation on the rate at which information can be transferred for given message energy by any communication system.”

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