What entity has the highest entropy density in the universe?

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Discussion Overview

The discussion revolves around the concept of entropy density in the universe, specifically focusing on black holes and their characteristics. Participants explore the relationship between black hole radius and entropy density, considering both maximal and minimal scenarios.

Discussion Character

  • Debate/contested, Conceptual clarification

Main Points Raised

  • One participant proposes that a black hole of maximal radius has the minimal entropy density of any physical entity and questions what entity has the maximal entropy density.
  • Another participant suggests that a black hole of minimal radius, such as a Planck black hole, may have the maximal entropy density, citing its classical entropy density and fluctuations due to quantum uncertainty.
  • A third participant expresses confusion regarding the term "maximal radius," questioning whether it refers to the entire universe.
  • A fourth participant humorously mentions the concept of a naked singularity in response to the discussion.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are competing views regarding the relationship between black hole radius and entropy density, and some express confusion about the terminology used.

Contextual Notes

There are unresolved definitions and assumptions regarding what constitutes "maximal radius" and how entropy density is quantified in different scenarios.

Loren Booda
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I believe a black hole of maximal radius has the minimal entropy density of any physical entity. What physical entity has the maximal entropy density?
 
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Perhaps a black hole of minimal radius, like a Planck black hole, has the maximal entropy density of any physical entity. It has the maximal classical entropy density for black holes, and in addition its surface area topology ("entropy") fluctuates with spacetime extremes from quantum uncertainty.
 
I hate to admit it, but I really can't understand the question. What on Earth do you mean by a black hole of 'maximal radius'? That would be the entire Universe.
 
A naked singularity?

*Snigger* He said "Naked" *Snigger*
 

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