What Is the Information That Cannot Escape a Black Hole?

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Discussion Overview

The discussion centers on the concept of information that cannot escape from a black hole, exploring its nature and implications within the context of quantum mechanics. Participants express curiosity about the definition and characteristics of this information, as well as its relationship to quantum states.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions what is meant by "information" that cannot escape a black hole, suggesting it could be akin to a structural quantum blueprint.
  • Another participant introduces the idea that information, such as the spin of an electron, is preserved when it falls into a black hole, implying that Hawking radiation must also carry an equivalent amount of information.
  • A later reply expresses uncertainty about the nature of information for particles that lack a steady state, indicating a lack of understanding of quantum mechanics but a desire to learn more.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the nature of information related to black holes, and multiple viewpoints regarding its definition and implications remain present.

Contextual Notes

Some assumptions about the nature of information in quantum mechanics and its relationship to black holes are not fully explored, and the discussion reflects varying levels of understanding among participants.

Who May Find This Useful

Individuals interested in quantum mechanics, black hole physics, and the philosophical implications of information theory may find this discussion relevant.

brendanxx
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TL;DR
Simple meaning of "information" - is it structural, separate from other structures, or simply a concept to mathematically describe the basic building blocks of something?
As a 71 year old writer who has been hooked by the quantum world I have struggled to find someone who can explain simply what is the "information" that cannot (?) escape from a black hole. Could this information, for instance, be described as the structural quantum blueprint of any form?
 
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We have a PF Insights article on the subject.
https://www.physicsforums.com/insights/how-to-better-define-information-in-physics/

But the black hole is difficult. Consider the spin of an electron, that can be up or down; exactly 1 bit of information. If the electron falls into a black hole, it brings that 1 bit of information with it. Whatever Hawking radiation that may come out of the BH in the future, also carries information and the information out must equal the information in.

If you understand QM, then you should know about Unitary operations. Unitarity and preservation of information are the same thing or at least closely related.
 
This is all so interesting. No, I do not understand quantum mechanics which, I guess is why I'm so interested in it. In my ignorance I wonder about things like - can a particle that has no steady state and which cannot generally be described have any information? There is no need to answer - I do understand my question springs from abysmal ignorance and I shall slink off to read your link and study more.
 
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