Absolute Being vs Relative Becoming
Joy Christian (Perimeter, Oxford)

TL;DR
This paper proposes a generalized theory of inertial structure where proper time is causally tensed, introducing bounds at the Planck scale, which results in a becoming universe distinct from the block universe of Minkowski spacetime.
Contribution
It introduces a new theory linking proper time causality with Planck scale bounds, capturing the transience of now and challenging the block universe view in physics.
Findings
Predicted deviations from special relativity are quadratically suppressed by the Planck energy.
Potential testable effects include oscillating flavor ratios of ultrahigh energy cosmic neutrinos.
Alterations in pulse rates of extreme energy binary pulsars may be observable.
Abstract
Contrary to our immediate and vivid sensation of past, present, and future as continually shifting non-relational modalities, time remains as tenseless and relational as space in all of the established theories of fundamental physics. Here an empirically adequate generalized theory of the inertial structure is discussed in which proper time is causally compelled to be tensed within both spacetime and dynamics. This is accomplished by introducing the inverse of the Planck time at the conjunction of special relativity and Hamiltonian mechanics, which necessitates energies and momenta to be invariantly bounded from above, and lengths and durations similarly bounded from below, by their respective Planck scale values. The resulting theory abhors any form of preferred structure, and yet captures the transience of now along timelike worldlines by causally necessitating a genuinely becoming…
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