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Physics of Time

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  • Gordon Belot (2007). The Representation of Time and Change in Mechanics. In John Earman & Jeremy Butterfield (eds.), Philosophy of Physics. Elsevier.
    This chapter is concerned with the representation of time and change in classical (i.e., non-quantum) physical theories. One of the main goals of the chapter is to attempt to clarify the nature and scope of the so-called problem of time: a knot of technical and interpretative problems that appear to stand in the way of attempts to quantize general relativity, and which have their roots in the general covariance of that theory. The most natural approach to these questions is via (...)
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  • David A. Harness, Quantum Continuum Gravitoelectromagnetic Mechanics.
    Static Maxwell-Einstein continuum mechanical gravitoelectromagnetic total stress energy momentum density tensor eigenvector matrix configuration space, provides flux for time dependent quantum mechanical eigenvalue matrix operator observables via Dirac-Noether conserved angular momentum probability current symmetry. Fundamental quantum continuum
    equation returns eigenvalues of photon gravitoelectromagnetic spectrum in units of Maxwell stress tensor pascals. Energization of off-diagonal stress tensor components results in electron-positron (moment of inertia x angular velocity) angular momentum origin of particle wave mass charge eigenvalues. In thought experiment test vs. general (...)
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  • Jill North, Time in Thermodynamics.
    Or better: time asymmetry in thermodynamics. Better still: time asymmetry in thermodynamic phenomena. “Time in thermodynamics” misleadingly suggests that thermodynamics will tell us about the fundamental nature of time. But we don’t think that thermodynamics is a fundamental theory. It is a theory of macroscopic behavior, often called a “phenomenological science.” And to the extent that physics can tell us about the fundamental features of the world, including such things as the nature of time, we generally think that only fundamental (...)
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  • Simon Saunders, Space-Time and Probability.
    Special relativity is most naturally formulated as a theory of spacetime geometry, but within the spacetime framework probability appears to be a purely epistemic notion. It is possible that progress can be made with rather different approaches - covariant stochastic equations, in particular - but the results to date are not encouraging. However, it seems a non-epistemic notion of probability can be made out in Minkowski space on Everett's terms. I shall work throughout with the consistent histories formalism. I shall (...)
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  • Bradford Skow (2009). Relativity and the Moving Spotlight. The Journal of Philosophy.
    A standard objection to the moving spotlight theory of time is that it is incompatible with special relativity. I show how to formulate the moving spotlight theory so that it is perfectly compatible with special relativity. There is no need to re-interpret the physics or add to it a notion of absolute simultaneity.
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  • Bradford Skow (2007). What Makes Time Different From Space? Noûs 41 (2):227–252.
    No one denies that time and space are different; and it is easy to catalog differences between them. I can point my finger toward the west, but I can’t point my finger toward the future. If I choose, I can now move to the left, but I cannot now choose to move toward the past. And (as D. C. Williams points out) for many of us, our attitudes toward time differ from our attitudes toward space. We want to maximize our (...)
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  • Sascha Vongehr, Supporting Abstract Relational Space-Time as Fundamental Without Doctrinism Against Emergence.
    The present paper aims to contribute to the substantivalism versus relationalism debate and to defend general relativity (GR) against pseudoscientific attacks in a novel, especially inclusive way. This work was initially motivated by the desire to establish the incompatibility of any ether theories with accelerated cosmic expansion and inflation (motto: where would a hypothetical medium supposedly come from so fast?). The failure of this program is of interest for emergent GR concepts in high energy particle physics. However, it becomes increasingly (...)
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