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    Carmelics

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    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    Home/Original/inverse
    See Original
    Inverse View

    It is not the case that The CMC approach is not viable as an approach to quantum gravity

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    1 perspective
    Reason for
    ?
    • Simply not being ruled out on experimental grounds does not render an approach viable
      ?

      Think about whether this reason is strong or weak

    Reasons Against

    2 perspectives
    Reason against 1 of 2
    ?
    • 1.CMC (Constant Mean Curvature) slicing imposes a preferred foliation of spacetime, violating the diffeomorphism invariance central to general relativity.
      ?

      Think about whether this reason is strong or weak

    • 2.Any viable quantum gravity approach must preserve or recover the background independence that general relativity demands as a foundational symmetry.
      ?

      Think about whether this reason is strong or weak

    • 3.An approach that structurally violates a foundational symmetry of its target theory cannot constitute a viable quantization of that theory.
      ?

      Think about whether this reason is strong or weak

    Reason against 2 of 2
    ?
    • 1.Kuchař and Torre demonstrated that CMC-based approaches face a severe problem of time: the CMC Hamiltonian generates fictitious gauge transformations rather than true dynamics.
      ?

      Think about whether this reason is strong or weak

    • 2.An approach whose Hamiltonian cannot distinguish genuine temporal evolution from gauge redundancy fails the minimal criterion of recovering classical dynamics in the appropriate limit.
      ?

      Think about whether this reason is strong or weak

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    Explore the most compelling reason on the other side.