Gravity as an emergent phenomenon

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Discussion Overview

The discussion revolves around the concept of gravity as an emergent phenomenon, exploring various theoretical frameworks and models related to this idea. Participants seek reading materials, references, and insights into emergent gravity, including its implications in cosmology and theoretical physics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests reading materials on emergent gravity, indicating familiarity with Carroll's lecture notes.
  • Another suggests the Wikipedia page on Induced Gravity as a resource.
  • A participant references previous discussions on emergent gravity within the forums and mentions Eric Verlinde's work as noteworthy.
  • There is a mention of spin networks and their relation to space and gravity, raising questions about the connection between the two concepts.
  • Neil Turok and Paul Steinhardt's book "The Endless Universe" is suggested, which discusses a cyclic universe and the relationship between gravity and brane kinetic energy.
  • A later post highlights a paper by Ted Jacobson titled "Thermodynamics of Spacetime: The Einstein Equation of State," suggesting it as an interesting reference related to the topic.

Areas of Agreement / Disagreement

Participants express interest in various aspects of emergent gravity, but there is no consensus on specific models or interpretations. Multiple competing views and references are presented without resolution.

Contextual Notes

Participants reference various theoretical models and papers, but the discussion lacks clarity on the definitions and assumptions underlying emergent gravity. The connections between space, gravity, and the proposed models remain unresolved.

Who May Find This Useful

This discussion may be useful for those interested in theoretical physics, cosmology, and the exploration of gravity as an emergent phenomenon, particularly at an introductory or review level.

Lapidus
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Can anybody suggest good reading material, introduction or review articles on this subject?
(I read and studied Carroll GR lecture notes, so everything at this level or below would be great.)

thanks
 
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Dopy me...
search EMERGENT GRAVITY right here in the forums...LOTs of discussions,
here is one:

https://www.physicsforums.com/showthread.php?t=474303&highlight=emergent+gravity

Eric Verlinde has some cool stuff too
https://www.physicsforums.com/showthread.php?t=415011&highlight=loll

Also consider spin networks: in these models picture a geodesic dome...analogous to some prior home designs...in the mathematical modesl, node points represent [space] volumes, edges (lines) represent [space] areas if I recall...what's the precise connection between space and gravity?? which comes first??

You might also consider Neil Turok and Paul Steinhardt's THE ENDLESS UNIVERSE where they discuss a cyclic universe where gravity powers brane kinetic energy...I forget what they have to say about the origins of each, if anything...
brief summary here:

http://en.wikipedia.org/wiki/Cyclic_Universe#The_Steinhardt.E2.80.93Turok_model
 
Last edited:
thanks!
 
This thread is now almost two mos old...but maybe somebody still cares...an interesting paper which was referenced here in the forums:

Thermodynamics of Spacetime:
The Einstein Equation of State
Ted Jacobson (1995, 9 pages)

http://arxiv.org/PS_cache/gr-qc/pdf/9504/9504004v2.pdf
 

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