Particles vs Fields: What's More Fundamental?

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SUMMARY

The discussion centers on the fundamental nature of particles versus fields in quantum field theory (QFT). Participants argue that fields are more fundamental than particles, as particles can be viewed as specific states of quantum fields. Key concepts include the role of bosons and fermions, the implications of QFT in curved spacetime, and the relationship between spatial and positional properties. The consensus leans towards fields being the foundational aspect of reality, with particles emerging as manifestations of these fields.

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  • Quantum Field Theory (QFT)
  • Understanding of bosons and fermions
  • Concept of curved spacetime in physics
  • Feynman diagrams and their interpretation
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  • Study the implications of QFT in curved spacetime
  • Explore the role of bosons and fermions in particle physics
  • Investigate the cosmological constant problem in quantum field theory
  • Learn about de Rham duality and its relevance to particle-field discussions
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Physicists, students of quantum mechanics, and anyone interested in the foundational aspects of quantum field theory and the nature of reality.

What is more fundamental: particles or fields?


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    65
  • #61
I applaud for your interest in picking up physics as a hobby, LostInSpaceTime, but I have to warn you: the two books you've mentioned: The Big Bang Never Happened and The Tao of Physics are terrible, terrible books. They are effectively works of socially-acceptable crackpottery. I strongly advise you to steer clear of these kinds of books, and focus on reputable, mainstream works instead.

You might find some of the following books interesting:

The Particle Universe
The Feynman Lectures
A Tour of the Calculus

- Warren
 
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  • #62
Particle or field ?

One would be very prudent before giving any answer since the history of physics

Wave or point like object ? Cophenague interpretation says that they are complementary aspect of the reality (the particle).

The QFT generally gives rise to uncertainty relation between phase and number of particle (if I remember well, this was fisrt established by Bohr and Heisenberg (or Rosenfled) in the framwork of QFT; see also Feynman who explain this in his classical books).

The interpretation of this relation is the following : if you measure precisely the phase of a field, you can't measure simultaneously the number of particle of the field. Bohr's complementarity principle apply here. So that field aspect and particle aspect are two aspect of one thing : the "quantum field".

So I would vote a third propostion : "Quantum field".

(Note that a vote won't help : the scientific method doesn't incorporate such a method to invalidate a theory !).
 
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