论文标题
几何动力学作为时间的功能主义
Geometrodynamics as Functionalism about Time
论文作者
论文摘要
我们从时空功能主义的角度回顾了三个广泛的几何动力学 - 以及部分原因是Machian或关系---项目。我们展示了这三个是如何减少D. Lewis所主张的类型的示例，如今，标签是“堪培拉计划”的标签。 这些项目是：（1）Hojman等人的几何动力学的恢复。 （1976）; （2）Schuller和合作者的计划（Schuller 2011； Dull，Schuller等人，2018年），从物理领域的物理学中推断出指标； （3）Gomes and Shyam（2016）扣除ADM Hamiltonian。 我们结束时要绘制有关形状动力学的积极推论：即，它对IT假定的Hamiltonian的理由有很好的理由。
We review three broadly geometrodynamical---and in part, Machian or relational---projects, from the perspective of spacetime functionalism. We show how all three are examples of functionalist reduction of the type that was advocated by D. Lewis, and nowadays goes by the label 'the Canberra Plan'. The projects are: (1) the recovery of geometrodynamics by Hojman et al. (1976); (2) the programme of Schuller and collaborators (Schuller 2011; Dull, Schuller et al. 2018) to deduce a metric from the physics of matter fields; (3) the deduction of the ADM Hamiltonian by Gomes and Shyam (2016). We end by drawing a positive corollary about shape dynamics: namely, it has a good rationale for the Hamiltonian it postulates.
