## Friday, January 02, 2009

### Gedanken Experiments

While some might consider the multi-dimensional nature of the emotive states laughter does indeed go a long way. It is not without consideration here that such a thinking moves beyond the normal everyday. We are all embroiled in it, one way or another. That is the "very superficial to me," that such an idea sees beyond the limitations of the everyday, and in this consideration, such emotive idealizations can be, very temporal and fluid.

A workers notion then, to the highs and lows, no matter your position in society, so do not think you can escape it's grasp it has on you, or you, moving in the world with experience.

COSMIC SEARCH: How did you come up with the name "black hole"?

John Archibald Wheeler:It was an act of desperation, to force people to believe in it. It was in 1968, at the time of the discussion of whether pulsars were related to neutron stars or to these completely collapsed objects. I wanted a way of emphasizing that these objects were real. Thus, the name "black hole".

The Russians used the term frozen star—their point of attention was how it looked from the outside, where the material moves much more slowly until it comes to a horizon.* (*Or critical distance. From inside this distance there is no escape.) But, from the point of view of someone who's on the material itself, falling in, there's nothing special about the horizon. He keeps on going in. There's nothing frozen about what happens to him. So, I felt that that aspect of it needed more emphasis.

Now being the layman that I am following the history of the subject contained in this proposal by the two individuals of the article below. It has not past my attention that history has unfolded and that such experiments have been presented later to show the continuing questions that exist or bet that had been established, that have now been paid.

Gedanken Experiments Involving Black Holes

ABSTRACT

Analysis of several gedanken experiments indicates that black hole complementarity cannot be ruled out on the basis of known physical principles. Experiments designed by outside observers to disprove the existence of a quantum-mechanical stretched horizon require knowledge of Planck-scale effects for their analysis. Observers who fall through the event horizon after sampling the Hawking radiation cannot discover duplicate information inside the black hole before hitting the singularity. Experiments by outside observers to detect baryon number violation will yield significant effects well outside the stretched horizon.

So to be sure one gets the sense that I have moved further then just to illustrate or present the idea of the Gedanken on another new blog for consideration, the opening thought of this post, I would like to show what I had gathered "on information," and then move on from there.

See:The elephant and the event horizon 26 October 2006 by Amanda Gefter at New Scientist.

Hawking radiation owes its existence to the weirdness of the quantum world, in which pairs of virtual particles pop up out of empty space, annihilate each other and disappear. Around a black hole, virtual particles and anti-particles can be separated by the event horizon. Unable to annihilate, they become real. The properties of each pair are linked, or entangled. What happens to one affects the other, even if one is inside the black hole.

It should not pass one's attention also that such an expression of what is happening inside the blackhole has it's observers working from the view of the horizon, and that such applications like Conformal Field theory, work to help us describe such a place.

Campbell's Soup Can by Andy Warhol Exhibited in New York (USA), Leo Castelli Gallery

Spacetime in String Theory-Dr. Gary Horowitz, UCSB-Apr 20, 2005

This year marks the hundredth anniversary of Einstein's "miraculous year", 1905, when he formulated special relativity, and explained the origin of the black body spectrum and Brownian motion. In honor of this occasion, I will describe the modern view of spacetime. After reviewing the properties of spacetime in general relativity, I will provide an overview of the nature of spacetime emerging from string theory. This is radically different from relativity. At a perturbative level, the spacetime metric appears as coupling constants" in a two-dimensional quantum field theory. Nonperturbatively (with certain boundary conditions), spacetime is not fundamental but must be reconstructed from a holographic, dual theory. I will conclude with some recent ideas about the big bang arising from string theory.

-----------------------------------------------------------------------------------