nLab bulk field theory

Idea

For a field theory with boundary the sector not containing boundaries is often called the corresponding bulk field theory.

For instance in AdS3-CFT2 and CS-WZW correspondence the Chern-Simons theory is the bulk field theory while the WZW model is the boundary field theory

Related concept

holographic principle in quantum field theory

bulk field theory	boundary field theory
dimension $n+1$	dimension $n$
field	source
wave function	correlation function
space of quantum states	conformal blocks