Conformal Boundary
A suitable Weyl transformation assures that AdS has a conformal boundary. It turns out that this boundary supports a conformal field theory having one fewer dimension. To make things more concrete, choose a particular coordinatization, the half-space coordinatization:
After a Weyl transformation ω = kz, we get
which has the Minkowski metric as the boundary at z = 0. This is called the conformal boundary.
Read more about this topic: AdS/CFT Correspondence
Famous quotes containing the word boundary:
“The boundary line between self and external world bears no relation to reality; the distinction between ego and world is made by spitting out part of the inside, and swallowing in part of the outside.”
—Norman O. Brown (b. 1913)