Fine-Tuning from First Principles don't laugh

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SUMMARY

This discussion centers on the stability mechanisms of the universe, particularly in the context of an expanding universe and entropy. The participants argue that modern science's view of the universe as infinite and unbounded fails to account for the implications of a finite, closed universe. Key concepts include the role of dissipative structures, the Lindblad equation, and the least action principle, which suggest that a flat universe maximizes expansion time while maintaining stability. The conversation highlights the need for a paradigm shift in understanding cosmic structure and entropy.

PREREQUISITES
  • Understanding of Hamiltonian mechanics
  • Familiarity with the Lindblad equation
  • Knowledge of entropy and thermodynamic principles
  • Concepts of finite and closed universe models
NEXT STEPS
  • Research the implications of the Lindblad equation in quantum mechanics
  • Explore the least action principle in cosmology
  • Study the relationship between entropy and cosmic structure formation
  • Investigate models of finite and closed universes
USEFUL FOR

Astronomers, physicists, cosmologists, and anyone interested in the fundamental principles governing the universe's expansion and stability.

island
It seems quite ludicrous to me that we have no stability mechanism that
explains why an expanding universe doesn't just blow itself apart, and
even then, the entropy of our near-flat universe is much less than it
should be, given any practical model of structure forming turbulence
that occurs with expansion.

Unless far from equilibrium dissipative structures, like us humans and
black holes serve to somehow enhance the entropic process, thereby
repaying the *most apparent* entropic debt. Surely, the configuration
of our universe must follow the least action principle, so it can't be
that difficult.

I think that the real problem with this lies in the fact that modern
science doesn't generally view the universe as being finite, bounded and
closed, and it doesn't consider space to be a physically connected
entity, because the uniform expansion of the whole will necessarily
entail the most-even distribution of energy possible, **within the
constraints of inherent imperfection**... if the universe is causaly
bound and bounded.

Quantum mechanics depends very much on Hamiltonian mechanics, and so it
isn't inherently able to describe dissipative structuring. As I
understand it, this can be done, however, by way of the "Lindblad
equation", which derives that flatness acts as a natural damper that
keeps the imbalanced universe from evolving inhomogeneously, so this is
the most natural configuration... IF the universe is finite and
closed... given inherent asymmetry in the energy. This will necessarily
maximize the time that the expansion process takes, and that's what a
flat universe accomplishes via anthropic structuring.

I do believe that the AP is telling us that the universe is finite,
closed and bounded... only nobody listens.
 
Space news on Phys.org
It seems quite ludicrous to me that we have no stability mechanism that
explains why an expanding universe doesn't just blow itself apart, and
even then, the entropy of our near-flat universe is much less than it
should be, given any practical model of structure forming turbulence
that occurs with expansion.

There are scenerios where the universe expands forever and ends up as a collection of cold dead stars, etc. In some variations, assuming the proton is unstable, then it is even less.

Why turbulence?
 

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