How are matter and spacetime connected above the Planck scale?

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SUMMARY

The discussion centers on the relationship between matter and spacetime above the Planck scale, specifically how mass, energy, and momentum influence the curvature of spacetime as described by the Einstein Field Equation. It highlights that Quantum Gravity theory is still evolving, suggesting that spacetime may exhibit granular properties at scales smaller than 10-20 meters, while quantum effects of matter are observed at significantly larger scales. The Planck length, approximately 10-15 meters, serves as a critical threshold for understanding these interactions.

PREREQUISITES
  • Understanding of Einstein Field Equations
  • Familiarity with Quantum Gravity theory
  • Knowledge of Planck scale physics
  • Basic concepts of mass-energy-momentum interactions
NEXT STEPS
  • Research the implications of Quantum Gravity on spacetime structure
  • Study the Einstein Field Equations in detail
  • Explore the concept of Planck length and its significance in theoretical physics
  • Investigate current advancements in understanding spacetime discontinuities
USEFUL FOR

The discussion is beneficial for physicists, cosmologists, and students of theoretical physics who are exploring the fundamental connections between matter and spacetime, particularly in the context of Quantum Gravity and Planck scale phenomena.

gva
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Hi,

How exactly is matter connected to spacetime above the Planck scale. We know that mass/energy/momentum or matter curve spacetime.. but how they are connected or binded or the interface between them?
 
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gva said:
How exactly is matter connected to spacetime

I'm not sure what you mean by "connected". As you say, we know that stress-energy curves spacetime, and the Einstein Field Equation expresses this connection. What, beyond that, are you looking for?
 
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gva said:
Hi,

How exactly is matter connected to spacetime above the Planck scale. We know that mass/energy/momentum or matter curve spacetime.. but how they are connected or binded or the interface between them?
Not sure if this relates to your question but Quantum Gravity theory is still a work in progress. The idea is that spacetime becomes granular and indeterminable at some scale. From what I can gather the current thinking is that if spacetime has discontinuities it is at a scale that is smaller than about 10-20 m. Planck length distances are about 10-15 smaller. (A proton is on the order of 100,000 times larger). Quantum effects of matter, therefore are observed at scales that are much greater than the scale at which quantum effects of spacetime could possibly be observed.

AM
 
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