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The causal sets program is an approach to quantum gravity.Its founding principles are that spacetime is fundamentally discrete (a collection of discrete spacetime points, called the elements of the causal set) and that spacetime events are related by a partial order.
Causal dynamical triangulation (CDT), theorized by Renate Loll, Jan Ambjørn and Jerzy Jurkiewicz, is an approach to quantum gravity that, like loop quantum gravity, is background independent. This means that it does not assume any pre-existing arena (dimensional space) but, rather, attempts to show how the spacetime fabric itself evolves.
For a causal curve , the causal diamond is + (()) (()) (here we are using the looser definition of 'curve' whereon it is just a set of points), being the point () in the causal past of (). In words: the causal diamond of a particle's world-line γ {\displaystyle \gamma } is the set of all events that lie in both the past of some point in γ ...
In causal set theory, causality takes an even more prominent place. The basis for this approach to quantum gravity is in a theorem by David Malament . This theorem states that the causal structure of a spacetime suffices to reconstruct its conformal class , so knowing the conformal factor and the causal structure is enough to know the spacetime.
Causal decision theory of evaluating the expected utility of an action; Causal sets theory, an approach to quantum physics; Causal perturbation theory, a mathematically rigorous approach to renormalization theory; Causal theories, a phenomenon in social psychology whereby humans guess wrongly about the reasons for their actions (part of the ...
Causal sets by Bombelli, Lee, Meyer and Sorkin All of spacetime at very small scales is a causal set consisting of locally finite set of elements with a partial order linked to the notion of past and future in macroscopic spacetime and causality between point-events. Derived from the causal order is the differential structure and the conformal ...
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Retrieved from "https://en.wikipedia.org/w/index.php?title=Causal_set_theory&oldid=201578360"This page was last edited on 28 March 2008, at 14:16 (UTC). (UTC).