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hep-th2025
One loop analysis of the cubic action for gravity
Enrique Alvarez, Jesus Anero, Carmelo P. Martin
We analyze some aspects of the cubic action for gravity recently proposed by Cheung and Remmen, which is a particular instance of a first order (Palatini) action. In this approach…
hep-th2024
Gravitons in a gravitational plane wave
Enrique Alvarez, Jesus Anero, Irene Sanchez-Ruiz
Gravitational plane waves (when Ricci flat) belong to the VSI family. The achronym VSI stands for vanishing scalar invariants, meaning that all scalar invariants built out of Riema…