1 citations · 1 across the 2 of their papers we have counts for
2 papers
gr-qc2026
The trace-free Einstein tensor is not variational for the metric as field variable
Arian L. von Blanckenburg, Domenico Giulini, Philip K. Schwartz
It is well-known that the trace-free Einstein tensor of a pseudo-Riemannian metric cannot arise by variation of a local diffeomorphism-invariant action functional with the (inverse…
gr-qc2025★ 1 cited
On gauge transformations in twistless-torsional Newton--Cartan geometry
Arian L. von Blanckenburg, Philip K. Schwartz
Twistless-torsional Newton--Cartan (TTNC) geometry exists in two variants, type I and type II, which differ by their gauge transformations. In TTNC geometry there exists a specific…