Do there exist theories of physics without the concept of force? For, example, even though we sometimes associate repulsion and/or attraction with the concept of force, can all that be explained without that concept? Can, somehow, all of physics be explained in terms of fields and continuous and, possibly, discontinuous changes and processes in only the fields themselves?

  • $\begingroup$ Yes. There are many theoretical frameworks. Are you interested in classical physics or in more general cases? $\endgroup$ – user1420303 Jun 12 at 1:25
  • $\begingroup$ @user1420303 In every case, in all the cases. $\endgroup$ – Grešnik Jun 12 at 1:27
  • $\begingroup$ You can start looking for Lagrangian and hamiltonian mechanics, Hamilton-Jacobi equation and quantum mechanics in its more common formulations. There are others alternatives. $\endgroup$ – user1420303 Jun 12 at 2:24
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    $\begingroup$ Quantum field theory doesn’t tend to talk about force, and it explains elementary particles and their strong, weak, and electromagnetic interactions in terms of quantum fields. (There is an electron field, a photon field, a quark field, etc.) General Relativity doesn’t tend to talk about force, and it explains gravity in terms of a non-quantum field that determines spacetime geometry. Modern fundamental physics is pretty much all about fields. $\endgroup$ – G. Smith Jun 12 at 2:54
  • $\begingroup$ I think energy can be used to explain physics without forces but energy in itself is derived from forces. $\endgroup$ – Unique Jun 12 at 4:54

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