Synthetic Dynamics

TL;DR

This paper proposes a novel framework for dynamics based on a probabilistic distribution of mechanical properties over spacetime, generalizing the Schrödinger equation and applicable to various physical systems.

Contribution

It introduces a new approach that separates the space of properties from the space of coordinates, enabling a thermodynamical interpretation of dynamics, including in general relativity.

Findings

Framework generalizes the Schrödinger equation using a partition function approach.

Applicable to particles, fields, and gravitational systems like scalar fields in cosmology.

Shows potential for studying spacetime-related quantities through thermodynamical dynamics.

Abstract

This work reflects on mechanics as an epistemological framework on the state of a physical system to regard dynamics as the distribution of mechanical properties over spacetime coordinates. The resulting distribution is taken to be the partition function of the relevant physical quantities over a spacetime parametrized by coordinates. The partition yields a probabilistic interpretation that, based on Feynman's path integral formulation, leads to a dynamical law that generalizes the Schr\"odinger equation. A variety of systems can be put into the form proposed here, including particles in potentials, as well as matter and interaction fields. The main advantage of the proposed framework is that it presents the space of properties separately from that of the space of coordinates, whereas the dynamical law can be interpreted as the equation of two differential structures, one from each of these spaces. The resulting framework shows possibilities to further study physical quantities that relate directly to the spacetime coordinates, whose dynamics is best described in thermodynamical, rather than Hamiltonian, terms. A notable example is the theory of general relativity, in which the case of a scalar field in a Robertson-Walker metric is explored.