A Relation Between Gravity in $(3+1)$--Dimensions and Pontrjagin Topological Invariant

Abstract

A relation between the MacDowell-Mansouri theory of gravity and the Pontrjagin toplogical invariant in $(3+1)$ dimensions is discussed. This relation may be of especial interest in the quest of finding a mechanism to go from non-dynamical to dynamical gravity.

9 pages, TeX

References in corpus (1)

• Some Computations in Background Independent Open-String Field Theory