What does it mean when we say something exists in physics?

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SUMMARY

The discussion centers on the philosophical implications of existence in physics, specifically regarding concepts such as force, virtual particles, and wavefunctions. Participants highlight that questions about the reality of these entities often lack clarity and are more philosophical than scientific. The consensus is that inquiries into existence should focus on measurement and empirical evidence rather than abstract definitions. The thread concludes with a reminder that philosophical discussions are not the primary focus of the forum.

PREREQUISITES
  • Understanding of basic physics concepts such as force and virtual particles.
  • Familiarity with quantum mechanics, particularly wavefunctions.
  • Knowledge of empirical measurement techniques in physics.
  • Awareness of the distinction between philosophical and scientific inquiries.
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  • Research the role of measurement in quantum mechanics.
  • Explore the concept of virtual particles in quantum field theory.
  • Study the philosophical implications of existence in physics.
  • Learn about the interpretations of wavefunction in quantum theory.
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Physicists, philosophy of science students, and anyone interested in the foundational questions of reality in physics.

Shing Ernst
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I am getting more and more confused when people say or ask if something exists? (Say force, virtual particles, or even spin)

Such as, "is wavefunction real?" "Are virtual particles real?" "Are force real?"

Are those types of questions usually ill-defined or not well-posed? Or they are just asking "How we measure them directly/indirectly?"

Sorry for being philosophical on a science website, but it is driving me crazy.
 
Physics news on Phys.org
As you note, your questions are more philosophical than science-oriented. We don't discuss philosophy at this site.

Thread closed.
 

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