Spacetime: continuous or quantized?

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SUMMARY

The discussion centers on the nature of spacetime, questioning whether it is continuous or quantized. It highlights that there is currently no experimental evidence supporting either perspective. Continuous spacetime is a foundational assumption in General Relativity, while quantum theory is deemed inadequate in this context. The conversation suggests that theoretical extensions aiming to unify General Relativity and quantum mechanics tend to favor a quantized model of spacetime.

PREREQUISITES
  • Understanding of General Relativity principles
  • Familiarity with quantum mechanics concepts
  • Knowledge of theoretical physics and its methodologies
  • Awareness of current debates in quantum gravity theories
NEXT STEPS
  • Research current theories in quantum gravity, such as Loop Quantum Gravity
  • Explore the implications of string theory on spacetime structure
  • Investigate empirical studies related to spacetime measurements
  • Examine the role of quantum field theory in understanding spacetime
USEFUL FOR

Physicists, researchers in theoretical physics, and students interested in the fundamental nature of spacetime and the intersection of quantum mechanics and relativity.

johann1301
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What proof or evidence -both theoretical or emperical - is there, that spacetime is quantized or continuous?
 
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There is no experimental evidence for either. Continuous is assumed for General Relativity. Quantum theory is inadequate. Extensions that try to unite these theories seem to lean toward quantized.
 

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