I've read the original papers on the relative state interpretation ("MWI") of Quantum Mechanics. They seem compelling, but they only addressed a nonrelativistic system and operators with discrete spectra. What has been done for relativistic systems, operators with continuous spectra, or both?

  • $\begingroup$ Which original papers? $\endgroup$ – Qmechanic Mar 17 at 18:00
  • $\begingroup$ I'm referring to the papers in press.princeton.edu/titles/437.html, The Many Worlds Interpretation of Quantum Mechanics, edited by Bryce Seligman Dewitt & Neill Graham; I haven't read Everett's dissertation. $\endgroup$ – shmuel Mar 17 at 20:01
  • $\begingroup$ Most papers on MWI deal with, for example, the x-basis (which of course has a continuous spectrum), in particular because the x-basis is loosely speaking the "decoherence basis", and therefore has particular importance. $\endgroup$ – user1247 Mar 21 at 2:14

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