Einstein's theory of relativity implies a B-theory of time. Deterministic interpretations of quantum mechanics such as the Many-Worlds would seem to be consistent with the B-theory. Regardless of whether time is fundamental or is described by the B-theory, does the MWI have a better explanatory scope than indeterministic interpretations?


closed as off-topic by Ben Crowell, Kyle Kanos, Emilio Pisanty, Qmechanic Jun 6 '18 at 11:12

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    $\begingroup$ I'm voting to close this question as off-topic because it would be better suited to philosophy.SE. $\endgroup$ – Ben Crowell Jun 6 '18 at 1:02
  • $\begingroup$ A physical theory does not imply metaphysical nonsense. "Is time A-theory or B-theory?" is a meaningless question, its only value is in figuring out which interpretation helps you understand relativity and physics better. $\endgroup$ – Abhimanyu Pallavi Sudhir Jun 6 '18 at 4:29
  • $\begingroup$ There is no absolute time in relativity, so whatever philosophical theory of time one may come up with has to be more complex that either A or B-theories, which are different perspectives on a singly parametrized time dimension. In 4D spacetime, one can not single out a specific time dimension. Different foliations are always possible. The relevant concept is the causal structure, which is absolute. $\endgroup$ – Stéphane Rollandin Jun 6 '18 at 8:29
  • $\begingroup$ See arxiv.org/abs/1312.2866 for details concerning my above comment. $\endgroup$ – Stéphane Rollandin Jun 6 '18 at 9:28