Gravity Leaking = Dark energy increasing

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SUMMARY

The discussion centers on the concept of gravity leaking and its potential relationship with dark energy and the expanding universe. Participants clarify that gravity leaking is a theoretical concept arising from models involving 3D-branes in 5D spacetime, and that there is no direct correlation between gravity leaking and accelerated expansion without specific mathematical conditions being met. The conversation references the laws of thermodynamics and the existence of parallel universes, emphasizing that while energy cannot be created or destroyed, its manifestations may vary across different dimensions.

PREREQUISITES
  • Understanding of 3D-brane and 5D spacetime models
  • Familiarity with the laws of thermodynamics
  • Knowledge of dark energy and its role in cosmology
  • Basic grasp of the Hubble parameter and its significance in cosmological models
NEXT STEPS
  • Research the implications of 3D-brane cosmology in higher-dimensional theories
  • Study the mathematical conditions for accelerated expansion in cosmological models
  • Explore the concept of dark energy and its effects on the universe's expansion
  • Investigate the relationship between gravity and quantum mechanics in theoretical physics
USEFUL FOR

Cosmologists, theoretical physicists, and students of astrophysics interested in advanced concepts of gravity, dark energy, and the structure of the universe.

AnTiGrAvItY
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Hello everybody, I am new to this forum and cosmology in general.

My knowledge about cosmology and astro-physics is rudimentary :shy: so guys cut me some slack.


From the limited information I know , I feel that phenomenon of gravity leaking might be related to the phenomenon of the expanding universe i.e Increase in dark energy.

As the laws of Thermodynamics state that energy can neither be created nor destroyed , it can be converted into one form or the other and the total amount of energy in A universe always remains constant, combined with the fact that several scientists believe in the existence of parallel universes, can it be that since gravity in our universe is leaking ( or in my understanding getting weaker) that in an another parallel universe, gravity might be getting stronger or dark energy might be decreasing?


So guys am i interpreting this correctly or even asking the right questions or am i totally offbase?
 
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AnTiGrAvItY said:
From the limited information I know , I feel that phenomenon of gravity leaking might be related to the phenomenon of the expanding universe i.e Increase in dark energy.

I have a feeling it's the latter, I'm afraid. I've never heard of gravity leaking, and you can have an expanding universe without dark energy.
 
There is no inmediate - or intuitive - link between leaking of gravity and accelerated expansion. Leaking of gravity will arise in models of a 3D-brane embedded in 5D spacetime, with afaik some general assumptions about the quantum behavior of gravity. However, for cosmological models derived from those models, there are several mathematical conditions that must met in order to have accelerated expansion - that basically depend on how the 3D brane is embedded in 5D spacetime, the relation between Planck scales on 4 and 5 spacetime dimensions, and the late-time Hubble parameter. See for example hep-th/0010186.
 

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