Thursday, July 10, 2025

Wheeler Feynman cosmology!?

 

  • This approach aims to address the issue of self-interaction in classical electrodynamics, where a charged particle would exert a force on itself, leading to infinities in calculations. 
Key Features:
  • Action at a Distance:
    The theory implies an instantaneous action at a distance between the source and the absorber, which is a departure from standard field theories. 
  • Time Symmetry:
    The absorber theory is time-symmetric, meaning it treats the future and past equally, which is a departure from the time-asymmetric nature of observed phenomena. 
  • No Self-Interaction:
    By incorporating the absorber, the theory eliminates the problem of self-interaction and the associated infinities. 
  • Influence of the Future:
    The absorber, representing the future, influences the present by sending a wave back to the source. 
Relationship to Other Concepts:
  • Mach's Principle:
    The absorber theory has some connections to Mach's principle, which suggests that inertia is determined by the distribution of matter in the universe. 
  • Quantum Electrodynamics (QED):
    While the absorber theory is a classical theory, it has influenced the development of QED, particularly in the way it handles self-interactions. 
  • One-Electron Universe:
    The concept of all electrons being manifestations of a single electron moving backward and forward in time is related to the absorber theory. 
Why it's not widely accepted:
  • Experimental Evidence:
    The theory relies on the existence of a "perfect absorber," which is not directly observable. While experiments have placed constraints on the properties of the absorber, it remains a theoretical construct. 
  • Calculational Complexity:
    While the theory can solve some problems, it can be difficult to calculate with, and standard renormalization techniques in QED are often preferred for practical calculations. 
  • Time-Reversal Asymmetry:
    The time-symmetric nature of the absorber theory is at odds with the observed time-asymmetry in the universe. 
In essence, the Wheeler-Feynman absorber theory is a thought-provoking attempt to understand the fundamental nature of electromagnetism and its implications for the universe, even though it has not become a mainstream theory

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