Conservation and integrability in lower-dimensional gravity

We address the questions of conservation and integrability of the charges in two and three-dimensional gravity theories at infinity. The analysis is performed in a framework that allows us to treat simultaneously asymptotically locally AdS and asymptotically locally flat spacetimes. In two dimensions, we start from a general class of models that includes JT and CGHS dilaton gravity theories, while in three dimensions, we work in Einstein gravity. In both cases, we construct the phase space and renormalize the divergences arising in the symplectic structure through a holographic renormalization procedure. We show that the charge expressions are generically finite, not conserved but can be made integrable by a field-dependent redefinition of the asymptotic symmetry parameters.

Automated summary

This study addresses the issues of conservation and integrability of charges in two and three-dimensional gravity theories, using a holographic renormalization procedure for analysis and treatment. Charge expressions are found to be generally finite, not conserved, but can be made integrable through a field-dependent redefinition of the asymptotic symmetry parameters.