Gibbons-Hawking-York boundary term

English

Etymology

The necessity of such a boundary term was first realised by James W. York and later refined in a minor way by Gary Gibbons and Stephen Hawking.

Proper noun

Gibbons-Hawking-York boundary term

1. (physics) In general relativity, a term that needs to be added to the Einstein-Hilbert action when the underlying spacetime manifold has a boundary.