Particles vs Fields: What's More Fundamental?

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The discussion centers on whether particles or fields are more fundamental in quantum field theory (QFT). Participants express differing views, with some arguing that particles are specific states of quantum fields, while others believe fields are more general and thus more fundamental. The relationship between spatial and positional properties is explored, suggesting that particles can be seen as dislocations in fields. The debate also touches on the implications of QFT in curved spacetime and the observer-dependent nature of particles. Ultimately, the conversation highlights the complexity of defining fundamental entities in quantum physics.

What is more fundamental: particles or fields?


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  • #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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