Deformed covariance in spherically symmetric vacuum models of loop quantum gravity: Consistency in Euclidean and self-dual gravity

Understand

Different versions of consistent canonical realizations of hypersurface deformations of spherically symmetric space-times have been derived in models of loop quantum gravity, modifying the classical dynamics and sometimes also the structure of space-time.

• Based on a canonical version of effective field theory, this paper provides a unified treatment, showing that modified space-time structures are generic in this setting.
• The special case of Euclidean gravity demonstrates agreement also with existing operator calculations.