Re: If black holes have no hair...



On Oct 19, 3:20 pm, Edward Green <spamspamsp...@xxxxxxxxxxx> wrote:
If black holes have no hair, and hence, no microstructure, then how
the hell do they have relatively huge _entropies_?  Or indeed, any
entropy? Where are the damn microstates?

Go straight to the source: Hawking and Bekenstein.

http://prola.aps.org/abstract/PRD/v7/i8/p2333_1
http://prola.aps.org/abstract/PRD/v13/i2/p191_1

More currently:

http://www.livingreviews.org/lrr-2001-6

That classical GR black holes can be described by exactly 3 numbers
[mass, charge, angular momentum] certainly does come up hard against
the suggestion that the black hole has an enormous amount of entropy.
.



Relevant Pages

  • Re: black hole entropy
    ... In sci.physics, Traveler ... >>> Old Man A BH has a temperature so it has to have entropy. ... >>> thinking about BH with a temperature and not radiating it outward. ... >>> When Bekenstien came up with black holes having entropy Hawking went ...
    (sci.physics)
  • Re: Penrose and Entropy
    ... information about the very early Universe. ... (The specific entropy ... is not exactly the number of photons per baryon, ... but black holes in particular have very high specific ...
    (sci.physics)
  • Re: Hawking in Dublin
    ... > symmetry is not broken. ... implied that a consideration of the questions about entropy and/or ... information for black holes within the context of a theory of quantum ... our universe contains numerous black holes, ...
    (sci.physics.research)
  • The Answer to Life... the Universe... and Everything...
    ... The stronger the vacuum the greater the entropy, ... so, from a human's frame of reference, black holes have the most entropy ... Dark energy is at most a theory at the moment, ... Now germany is one of the strongest economies in the world. ...
    (sci.physics)
  • Hawking_Radiation, Unruh_Radiation, gavity and Space_Time_Entropy.
    ... not understanding that black holes always dissipate before they fully form. ... The universe has only a finite lifespan before entropy, ...
    (sci.physics)