Holographic principle responsible for life?

Click For Summary

Discussion Overview

The discussion revolves around the holographic principle and its implications for entropy, complexity, and the potential for life within the universe. Participants explore theoretical connections between the holographic principle, entropy per volume, and quantum states, considering both conceptual and speculative aspects of these relationships.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants propose that the holographic principle suggests that entropy calculated from the surface of a sphere limits the entropy inside that sphere, leading to the idea that larger volumes may result in lower entropy per unit volume.
  • There is speculation that a large enough universe could allow for improbable complexities, such as life, due to the diminishing entropy per volume.
  • Some participants question whether the reduction of entropy per volume could be linked to the collapse of quantum states and wave functions when considering larger systems.
  • A hypothesis is presented that bits of quantized spacetime may need to organize themselves to maintain lower entropy per volume, potentially leading to the emergence of particles.
  • One participant mentions the zero point energy (ZPE) and its relationship to entropy, suggesting that it maintains a constant entropy relative to the universe's expansion.
  • Another participant references work by Rueda and Haish, discussing the relationship between entropy, area, and energy in the context of the holographic principle.
  • Connections between parts of reality within a region are proposed to determine the entropy or information within that region, with references to entanglement and probability in larger volumes.
  • A comparison is made to Mark Srednicki's work, which relates the von Neumann entropy of a quantum field to the area of a sphere rather than its volume.

Areas of Agreement / Disagreement

Participants express a range of speculative ideas regarding the implications of the holographic principle and entropy, with no clear consensus on the connections or outcomes discussed. Multiple competing views and hypotheses remain present throughout the discussion.

Contextual Notes

Some limitations include the dependence on definitions of entropy and the assumptions about the nature of spacetime and quantum states. The discussion also reflects unresolved mathematical steps and speculative reasoning.

Mike2
Messages
1,312
Reaction score
0
The holographic principle claims that physics on the surface of a sphere determines the physics inside the volume enclosed by that sphere. And in particular, the entropy calculated from the surface of the sphere limits the entropy inside the sphere. If so, then entropy per unit volume would go as the surface area of a sphere divided by the volume of the sphere, or ~r^2/r^3 = 1/r. So if the entropy per volume must diminish when considering larger and larger volumes, then does this imply that with a large enough universe, there must exist improbable complexities such as life? Does the expansion of the universe force a lower entropy state/volume on the average?
 
Space news on Phys.org
Mike2 said:
The holographic principle claims that physics on the surface of a sphere determines the physics inside the volume enclosed by that sphere. And in particular, the entropy calculated from the surface of the sphere limits the entropy inside the sphere. If so, then entropy per unit volume would go as the surface area of a sphere divided by the volume of the sphere, or ~r^2/r^3 = 1/r. So if the entropy per volume must diminish when considering larger and larger volumes, then does this imply that with a large enough universe, there must exist improbable complexities such as life? Does the expansion of the universe force a lower entropy state/volume on the average?

If the result of considering larger volumes means that the entropy/volume must be less, could this be responsible for the reduction of quantum states and the collapse of wave functions from the a superposition of many possibilities when considering small regions to one choice of eigenstate measured by larger systems? Throw in some thoughts if you have them.
 
Mike2 said:
If the result of considering larger volumes means that the entropy/volume must be less, could this be responsible for the reduction of quantum states and the collapse of wave functions from the a superposition of many possibilities when considering small regions to one choice of eigenstate measured by larger systems? Throw in some thoughts if you have them.

Now we suppose that spacetime is quantized so that there are bits of spacetime arranged randomly next to each other. The surface area of each bit of spacetime restricts the entropy inside to that required to describe the properties of that bit. But when we consider that larger regions of space have a smaller entropy per volume, then I suppose that these bits of random spacetime may have to organize themselves in such a way as to reduce the entropy per volume in which they are contained. These re-organizations of spacetime bits would then be the particles of nature. They would not have to be permanent particles, but there might be different kinds of particles popping into and out of existence as long as the same entropy per volume was maintained. This would resemble the virtual particles of the zero point energy. Perhaps there is even a calculation that can be made to show that the zero point energy maintains a constant entropy/volume.
 
Curious.

The ZPE does indeed maintain a constant entropy relative to the Universes expansion. (see work by Rueda and Haish) but whether this could be linked with the holographic principle is questionable.
If entropy can be measured by the area of spacetime and the ZPF has an energy decreasing with the area, a definative entropy/energy constant is established.

You may also want to look at Shu Yuan Chu's derivation of time-symmetric version of quantum gravity
 
I found a very good explanation of the holographic principle a couple of days ago, I know it does not answer the question in the thread but it does very well explain the holographic principle...

URL: http://unano.org/2007/01/27/holographic-principle-explained/

Robert
 
Last edited by a moderator:
emil2k said:
I found a very good explanation of the holographic principle a couple of days ago, I know it does not answer the question in the thread but it does very well explain the holographic principle...

URL: http://unano.org/2007/01/27/holographic-principle-explained/

Robert

Thanks for the interest. I'm beginning to think I know why the holographic principle might work. Though I haven't worked out the details yet. I'm thinking that connections between the parts of reality within a region (sphere) determine the entropy (or information?) within that region.

A given region contains a conjunction of its various parts (planck units of spacetime perhaps), and a conjunction implies that each part implies every other part. The physical interpretation of this might be entanglement between the various parts. But as one considers larger regions, then there are more connections (entanglements?) between the parts. I'm thinking that the increase in connections within larger volumes works to lower the entropy per unit volume in that region so that it appears that the entropy of a region is determined by its surface area and not its volume.

Now if one part implied a second with absolute certainty, there would be no information or entropy involved with increased regions of absolutely connected parts. So it seems there must be some probability involved when one part implies the next. This might works as a distance function since nearer things generally have more of an effect (with certainty) then farther things. So I'm taking a look at point set topology again from this perspective.
 
Last edited by a moderator:
Mike2 said:
I'm thinking that connections between the parts of reality within a region (sphere) determine the entropy (or information?) within that region.
A similar idea has been already formulated by Mark Srednicki is his paper Entropy and Area, where he proved that for a quantum field, the von Neumann entropy related to the reduced density matrix within a sphere scales with the area of the sphere but not with its volume.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
Replies
2
Views
3K
  • · Replies 40 ·
2
Replies
40
Views
8K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 16 ·
Replies
16
Views
1K
  • · Replies 11 ·
Replies
11
Views
4K