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gr-qc2022★ 7 cited
Power-law Inflation Satisfies Penrose's Weyl Curvature Hypothesis
Guido D'Amico, Nemanja Kaloper
Based on entropy considerations and the arrow of time Penrose argued that the universe must have started in a special initial singularity with vanishing Weyl curvature. This is oft…
gr-qc2019★ 14 cited
On Black Hole Echoes
Guido D'Amico, Nemanja Kaloper
We consider a very simple model for gravitational wave echoes from black hole merger ringdowns which may arise from local Lorentz symmetry violations that modify graviton dispersio…