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gr-qc2025
Weyl double copy in bimetric massive gravity
Hugo García-Compeán, César I. Ramos
The Weyl double copy formalism, which relates the Weyl spinor with the square of the field strength, is studied in the context of Hassan-Rosen bigravity for stationary and time-dep…
gr-qc2024
Plebański-Demiański solutions in bigravity and Kerr-Schild double copy relations using an effective metric
Hugo García-Compeán, César I. Ramos
In this work a formalism for proportional generalized double Kerr-Schild ansatz in bigravity is considered, where both metrics are coupled to matter. We study time-dependent and st…
gr-qc2024
Classical Kerr-Schild double copy in bigravity for maximally symmetric spacetimes
H. García-Compeán, C. Ramos
A generalized Kerr-Schild ansatz for bigravity, already considered in the literature, which leads to linear interactions between the metrics is used to study the bigravity equation…