Stoica, Ovidiu Cristinel (2022) Background freedom leads to many-worlds with local beables and probabilities. [Preprint]

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Abstract

I argue that background freedom in quantum gravity automatically leads to a dissociation of the quantum state into states having a classical space. That is, interference is not completely well-defined for states with different space geometries, even if their linear combination is.
Interference of states with different space geometry is still allowed at small scales, but precluded at macro-scales. Macro-states, including measuring devices, appear classical.
The distribution of space geometries automatically gives the Born rule.
The dissociation entails a kind of absolute decoherence, making the ad-hoc wavefunction collapse unnecessary. This naturally leads to a new version of the many-worlds interpretation, in which:
1) the classical space-states form an absolute preferred basis,
2) at any time, the resulting micro-branches look like classical worlds, with objects in space,
3) macro-branches stop interfering, even though micro-branches can interfere (as they should),
4) the space geometries converge at the Big-Bang, favoring macro-branching towards the future,
5) the wavefunctional becomes real by absorbing the phases in the global U(1) gauge,
6) ontologically, the wavefunctional consists of many gauged space-states, each of them counting as a world by having local beables (the space geometry and the classical fields),
7) the density of the classical space-states automatically obeys the Born rule.

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Item Type:	Preprint
Creators:	Creators Email ORCID Stoica, Ovidiu Cristinel holotronix@gmail.com 0000-0002-2765-1562
Keywords:	Everett's many-worlds interpretation; Born rule; quantum gravity; background-independence; many-spacetimes interpretation
Subjects:	Specific Sciences > Physics > Cosmology General Issues > History of Philosophy of Science Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Quantum Field Theory Specific Sciences > Physics > Quantum Mechanics
Depositing User:	Ovidiu Cristinel Stoica
Date Deposited:	07 Nov 2022 14:43
Last Modified:	07 Nov 2022 14:43
Item ID:	21365
Subjects:	Specific Sciences > Physics > Cosmology General Issues > History of Philosophy of Science Specific Sciences > Physics > Quantum Gravity Specific Sciences > Physics > Quantum Field Theory Specific Sciences > Physics > Quantum Mechanics
Date:	18 September 2022
URI:	https://philsci-archive.pitt.edu/id/eprint/21365

Available Versions of this Item

• Counting 3d-spaces: classicality and probability in standard and many-worlds quantum mechanics from quantum-gravitational background-freedom. (deposited 18 Sep 2022 19:41)
  • Counting 3d-spaces: classicality and probability in standard and many-worlds quantum mechanics from quantum-gravitational background-freedom. (deposited 07 Oct 2022 13:46)
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      • Background freedom leads to many-worlds with local beables and probabilities. (deposited 07 Nov 2022 14:43) [Currently Displayed]
        • Background freedom leads to many-worlds with local beables and probabilities. (deposited 13 Jan 2023 14:02)

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