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Studies in History and Philosophy of Science Part B Studies in History and Philosophy of Modern Physics

Loop quantum ontology: Spacetime and spin-networks

Joshua Norton

Published Apr 25, 2020• 23 citations
Publisher
DOI
10.1016/j.shpsb.2020.04.001

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OALib•Jan 1, 2019•0 citations
This paper proposes a novel ontological model in which the universe does not exist as an objective background spacetime, but emerges relationally through the ultra-high-speed trajectory (projection) from a single fundamental information source. We reject the traditional paradigm that treats the flow of time as absolute, and reinterpret spacetime as a geometric structure composed of the shortest paths of information (an L1-norm network). Within this framework, the localization of matter and the collapse of many-worlds superpositions are defined as a "Dimensional Lock" triggered by the act of information selection known as observation. Integrating insights from John Wheeler's "one-electron universe" and modern loop quantum gravity, we discuss how the intuition that "All is one, and one is all" philosophically resonates with the deepest levels of modern physics.
Ultimate goal of the work described in this paper has been the construction of a local causal model of quantum theory including quantum field theory.The original model has been refined in a number of refinement steps.As the so far latest refinement step, quantum loops are identified as the elementary processes of spacetime dynamics and quantum field dynamics.Quantum loops are processes that constitute quantum objects.In the causal model of quantum loops and quantum objects presented here, the collective behavioral processes involve the elementary units of spacetime and the associated elementary units of quantum of fields.As such, quantum loop processes are the sources of gravitational fields (i.e., spacetime curvature) and of the quantum objects (wave function).The model may be viewed as a derivative of loop quantum gravity, spin networks and causal dynamical triangulation, although significant deviations to these theories exist.The causal model of quantum loops is based on a causal model of spacetime dynamics where space (-time) consists of interconnected space points, each of which is connected to a small number of neighboring space points.The curvature of spacetime is expressed by the density of these space points and by the arrangement of the connections between them.The quantum loop emerges in a collective behavioral process from a collection of space points that carry energy and quantum field attributes.The paper is considered by the author to represent a fairly complete causal model, except for some processes whose detailed behaviour needs to be determined by use of further computer simulations.