I haven’t read Sebens’ article and my a priori estimate of its value is very low. Maybe I’ll take a look at it later.
Regarding what you write about particles. Particles are not fundamental entities in modern physics: quantum fields are (or quantum string fields, whatever the latter are). A state of matter can only be described as a collection of particles in certain limits and approximations. The position of a particle is especially ill defined because of Compton wavelength non-locality in quantum relativity.
Also thinking of QM worlds as “keys” is not a good idea. The wavefunction can only be decomposed into “worlds” as a macroscopic approximation, there are no “worlds” on the fundamental level.
I haven’t read Sebens’ article and my a priori estimate of its value is very low. Maybe I’ll take a look at it later.
Regarding what you write about particles. Particles are not fundamental entities in modern physics: quantum fields are (or quantum string fields, whatever the latter are). A state of matter can only be described as a collection of particles in certain limits and approximations. The position of a particle is especially ill defined because of Compton wavelength non-locality in quantum relativity.
Also thinking of QM worlds as “keys” is not a good idea. The wavefunction can only be decomposed into “worlds” as a macroscopic approximation, there are no “worlds” on the fundamental level.