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  1. The Physics and Metaphysics of Pure Shape Dynamics.Antonio Vassallo, Pedro Naranjo & Tim Koslowski - 2022 - In The Foundations of Spacetime Physics: Philosophical Perspectives. New York, NY: Routledge.
    The goal of this essay is twofold. First, it provides a quick look at the foundations of modern relational mechanics by tracing its development from Julian Barbour and Bruno Bertotti's original ideas until present-day's pure shape dynamics. Secondly, it discusses the most appropriate metaphysics for pure shape dynamics, showing that relationalism is more of a nuanced thesis rather than an elusive one. The chapter ends with a brief assessment of the prospects of pure shape dynamics in light of quantum physics.
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    Frequently Asked Questions About Shape Dynamics.Henrique Gomes & Tim Koslowski - 2013 - Foundations of Physics 43 (12):1428-1458.
    Barbour’s interpretation of Mach’s principle led him to postulate that gravity should be formulated as a dynamical theory of spatial conformal geometry, or in his terminology, “shapes.” Recently, it was shown that the dynamics of General Relativity can indeed be formulated as the dynamics of shapes. This new Shape Dynamics theory, unlike earlier proposals by Barbour and his collaborators, implements local spatial conformal invariance as a gauge symmetry that replaces refoliation invariance in General Relativity. It is the purpose of this (...)
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    Quantum Inflation of Classical Shapes.Tim Koslowski - 2017 - Foundations of Physics 47 (5):625-639.
    I consider a quantum system that possesses key features of quantum shape dynamics and show that the evolution of wave-packets will become increasingly classical at late times and tend to evolve more and more like an expanding classical system. At early times however, semiclassical effects become large and lead to an exponential mismatch of the apparent scale as compared to the expected classical evolution of the scale degree of freedom. This quantum inflation of an emergent and effectively classical system, occurs (...)
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  4. A proposal for a metaphysics of self-subsisting structures. I. Classical physics.Antonio Vassallo, Pedro Naranjo & Tim Koslowski - 2022 - Synthese 200 (5):1-32.
    We present a new metaphysical framework for physics that is conceptually clear, ontologically parsimonious, and empirically adequate. This framework relies on the notion of self-subsisting structure, that is, a set of fundamental physical elements whose individuation and behavior are described in purely relational terms, without any need for a background spacetime. Although the specification of the fundamental elements of the ontology depends on the particular physical domain considered---and is thus susceptible to scientific progress---, the empirically successful structural features of the (...)
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