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gr-qc2020★ 4 cited
Lanczos equation on light-like hypersurfaces in a cosmologically viable class of kinetic gravity braiding theories
Bence Racskó, László Árpád Gergely
We discuss junction conditions across null hypersurfaces in a class of scalar-tensor gravity theories with i) second order dynamics, ii) obeying the recent constraints imposed by g…
gr-qc2020★ 2 cited
Light-like shockwaves in scalar-tensor theories
Bence Racskó, László Árpád Gergely
Both electromagnetic shock-waves and gravitational waves propagate with the speed of light. If they carry significant energy-momentum, this will change the properties of the space-…