Causal boundary | Article about causal boundary by The Free Dictionary
causal boundary[¦kȯz·əl ′bau̇n·drē]
A boundary attached to a space-time that depends only on the causal structure; it does not distinguish between boundary points at finite distances (singularities) or those at infinity. Also known as C boundary.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
We notice that in the action formalism variations of metric tensor should be limited by the Hubble horizon, which represents a causal boundary
of classical spacetime.
McNabb, An initial value theory for linear causal boundary
value problems, Journal of Differential Equations 15(1974) 322-349.
They also introduce the new Busemann compactification, relating it to the previous two completions, and give a full description of the causal boundary
of any standard conformally stationary spacetime.