Tuesday, December 23, 2014

Christmas physics

[1209.0881] A Potential Foundation for Emergent Space-Time

The abstract:
We present a novel derivation of both the Minkowski metric and Lorentz
transformations from the consistent quantification of a causally ordered set of
events with respect to an embedded observer. Unlike past derivations, which
have relied on assumptions such as the existence of a 4-dimensional manifold,
symmetries of space-time, or the constant speed of light, we demonstrate that
these now familiar mathematics can be derived as the unique means to
consistently quantify a network of events. This suggests that space-time need
not be physical, but instead the mathematics of space and time emerges as the
unique way in which an observer can consistently quantify events and their
relationships to one another. The result is a potential foundation for emergent
 But the introduction of the paper itself makes the point a bit clearer:
We demonstrate that concepts of space and time, and their precise relation to one another, can emerge as a representation of relations among causally-related events. While we take causality as a postulate, we have demonstrated in other work [22][23] that it is of benefit to push back further and consider the idea that directed particle particle interactions enable one to define a causal ordering among related events. The basic idea is that everything that is detected or measured is the direct result of something influencing something else. We focus on an intentionally simplistic, but fundamental, picture of  influence where we consider the process of influence to connect and order the act of influencing and the act of being influenced. We refer to each of these two acts with the generic term event, so that the event associated with the act of influencing causes the event associated with the act of being influenced.
Rather sounds like physicists working on a way of supporting Aquinas (or Sound of Music theology - "nothing comes from nothing, nothing ever could".)  And - guess what - I see that the work was supported by a grant from the Templeton Foundation.

All rather interesting, anyway.


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